EP4009561A1 - Verfahren und vorrichtung zur übertragung von feedback-informationen - Google Patents

Verfahren und vorrichtung zur übertragung von feedback-informationen Download PDF

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Publication number
EP4009561A1
EP4009561A1 EP20847693.7A EP20847693A EP4009561A1 EP 4009561 A1 EP4009561 A1 EP 4009561A1 EP 20847693 A EP20847693 A EP 20847693A EP 4009561 A1 EP4009561 A1 EP 4009561A1
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EP
European Patent Office
Prior art keywords
feedback information
piece
candidate
sent
needs
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP20847693.7A
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English (en)
French (fr)
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EP4009561A4 (de
Inventor
Lili Zhang
Xingwei Zhang
Chao Li
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Publication of EP4009561A1 publication Critical patent/EP4009561A1/de
Publication of EP4009561A4 publication Critical patent/EP4009561A4/de
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0027—Scheduling of signalling, e.g. occurrence thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1854—Scheduling and prioritising arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1896—ARQ related signaling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/30—Services specially adapted for particular environments, situations or purposes
    • H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/70—Services for machine-to-machine communication [M2M] or machine type communication [MTC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/543—Allocation or scheduling criteria for wireless resources based on quality criteria based on requested quality, e.g. QoS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria

Definitions

  • the present invention relates to the field of wireless communication technologies, and in particular, to a feedback information transmission method and apparatus.
  • Terminal devices may perform direct communication, including device-to-device (Device to Device, D2D) communication and vehicle-to-everything (vehicle to everything, V2X) communication, with each other.
  • the V2X includes vehicle-to-vehicle (Vehicle to Vehicle, V2V) communication, vehicle-to-pedestrian (Vehicle to Pedestrian, V2P) communication, or vehicle-to-infrastructure/network (Vehicle to Infrastructure/Network, V2I/N) communication.
  • a transmission resource for the terminal device needs to be determined.
  • the V2X is used as an example.
  • the sidelink may also be referred to as a secondary link or a sidelink.
  • a resource is transmitted on an SL, there are usually two modes for resource scheduling. One mode is that a base station schedules the resource, and the other mode is that a terminal device performs automatic detection and uses the resource according to a resource preemption method.
  • Case 1 UE sends a physical sidelink shared channel (Physical Sidelink Shared Channel, PSSCH), and receives another PSSCH scheduled by SCI. Respective physical sidelink feedback channels (Physical Sidelink Feedback Channel, PSFCH) of the two PSSCHs appear in a same timeslot (or slot).
  • Case 2 UE receives SCI sent by different UEs and PSSCHs scheduled by the SCI. PSFCHs corresponding to these PSSCHs appear in a same timeslot.
  • a collision is caused between feedback information that needs to be sent by the terminal device and/or feedback information that needs to be received by the terminal device.
  • the present invention provides a feedback information transmission method and apparatus, to help resolve a problem of a collision between receiving and/or sending of feedback information, thereby ensuring accurate and efficient receiving and/or sending of the feedback information.
  • a feedback information transmission method includes: A terminal device determines at least one piece of to-be-sent feedback information and/or at least one piece of to-be-received feedback information in at least one piece of candidate feedback information, where the at least one piece of candidate feedback information includes at least one piece of candidate feedback information that needs to be sent and/or at least one piece of candidate feedback information that needs to be received, and the at least one piece of candidate feedback information that needs to be sent and/or the at least one piece of candidate feedback information that needs to be received corresponds to a same time domain resource; and the terminal device sends the at least one piece of to-be-sent feedback information, and/or the terminal device receives the at least one piece of to-be-received feedback information.
  • the terminal device may be a vehicle-mounted device, a device used by a user, a roadside unit, a network device, or the like.
  • a technology used by the terminal device in a data receiving and/or sending process may be a D2D technology, a V2X technology, or the like.
  • the V2X technology may be based on an LTE-V2X technology, an NR-V2X technology, and the like.
  • the time domain resource includes a slot, a symbol, another time domain granularity, or the like.
  • the terminal device may determine the at least one piece of to-be-sent feedback information or the at least one piece of to-be-received feedback information in the at least one piece of candidate feedback information, and then the terminal device sends the at least one piece of to-be-sent feedback information, or receives the at least one piece of to-be-received feedback information.
  • the terminal device may alternatively determine the at least one piece of to-be-sent feedback information and the at least one piece of to-be-received feedback information in the at least one piece of candidate feedback information, and then the terminal device simultaneously sends the at least one piece of to-be-sent feedback information and receives the at least one piece of to-be-received feedback information.
  • the terminal device may determine the at least one piece of to-be-sent feedback information in the at least one piece of candidate feedback information that needs to be sent, and then the terminal device sends the at least one piece of to-be-sent feedback information, where the at least one piece of to-be-sent feedback information does not exceed the sending capability of the terminal device.
  • the terminal device determines at least one piece of to-be-sent feedback information in the at least one piece of candidate feedback information, and then sends the at least one piece of to-be-sent feedback information.
  • the terminal device determines at least one piece of to-be-received feedback information in the at least one piece of candidate feedback information, and then receives the at least one piece of to-be-received feedback information.
  • At least one piece of candidate feedback information includes at least one piece of candidate feedback information that needs to be sent and at least one piece of candidate feedback information that needs to be received, and the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received correspond to a same time domain resource
  • the terminal device determines at least one piece of to-be-sent feedback information in the at least one piece of candidate feedback information, and then sends the at least one piece of to-be-sent feedback information; or the terminal device determines at least one piece of to-be-received feedback information in the at least one piece of candidate feedback information, and then receives the at least one piece of to-be-received feedback information.
  • the terminal device determines at least one piece of to-be-sent feedback information and at least one piece of to-be-received feedback information in the at least one piece of candidate feedback information, and then sends the at least one piece of to-be-sent feedback information and receives the at least one piece of to-be-received feedback information.
  • the terminal device may select the at least one piece of to-be-sent feedback information and/or the at least one piece of to-be-received feedback information from the at least one piece of candidate feedback information that needs to be sent and/or the at least one piece of candidate feedback information that needs to be received, and then send the at least one piece of to-be-sent feedback information, and/or receive the at least one piece of to-be-received feedback information. Therefore, this method resolves a collision caused in a receiving and/or sending process of feedback information, and ensures efficient and accurate receiving and/or sending of the feedback information.
  • the at least one piece of candidate feedback information that needs to be sent and/or the at least one piece of feedback information that needs to be received corresponds to a same first time domain resource.
  • the terminal device sends the at least one piece of to-be-sent feedback information on a second time-frequency resource, and/or the terminal device receives the at least one piece of to-be-received feedback information on the second time-frequency resource, where the second time-frequency resource is the same as the first time-frequency resource, the second time-frequency resource includes the first time-frequency resource, or the second time-frequency resource partially overlaps the first time-frequency resource.
  • the terminal device may determine the at least one piece of to-be-sent feedback information and/or the at least one piece of to-be-received feedback information in the at least one piece of candidate feedback information in the following several manners:
  • the quality of service level may include a reference value such as a QoS level.
  • a specific QoS level may include a reference value such as a PPPP/5QI, and may further include reference values such as availability, a throughput, a delay, and a packet loss rate.
  • the type of the data may include unicast and groupcast/multicast, include a reservation type and a scheduling type, or include an option 1 feedback and an option 2 feedback.
  • the feedback type may include an acknowledgement feedback and a negative acknowledgement feedback.
  • the terminal device determines the at least one piece of to-be-sent feedback information and/or the at least one piece of to-be-received feedback information based on the quality of service level of the data information corresponding to the at least one piece of candidate feedback information:
  • the terminal device determines the at least one piece of to-be-sent feedback information and/or the at least one piece of to-be-received feedback information based on the first quantity of the at least one piece of candidate feedback information that needs to be sent and/or the second quantity of the at least one piece of candidate feedback information that needs to be received:
  • the terminal device determines the at least one piece of to-be-sent feedback information and/or the at least one piece of to-be-received feedback information based on the type of the data corresponding to the at least one piece of candidate feedback information:
  • the terminal device determines the at least one piece of to-be-sent feedback information and/or the at least one piece of to-be-received feedback information based on the feedback period of the at least one piece of candidate feedback information includes:
  • the terminal device determines the at least one piece of to-be-sent feedback information and/or the at least one piece of to-be-received feedback information based on the feedback type of the at least one piece of candidate feedback information:
  • the terminal device may determine the at least one piece of to-be-sent feedback information and/or the at least one piece of to-be-received feedback information based on a quality of service level, a quantity of pieces of candidate feedback information, a type of data corresponding to the candidate feedback information, a feedback period of the candidate feedback information, or a feedback type of the candidate feedback information. This helps resolve a collision caused in the receiving and/or sending process of the feedback information.
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent; and when a first reference value of a quality of service level of data information corresponding to the at least one piece of candidate feedback information that needs to be sent is greater than or equal to a first priority threshold, the terminal device determines the at least one piece of to-be-sent feedback information, where the at least one piece of to-be-sent feedback information belongs to the at least one piece of candidate feedback information that needs to be sent.
  • the terminal device may determine the at least one piece of to-be-sent feedback information based on the first reference value of the quality of service level of the data information corresponding to the at least one piece of candidate feedback information that needs to be sent. This helps resolve a collision caused in a sending process of the feedback information.
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be received; and when a second reference value of a quality of service level of data information corresponding to the at least one piece of candidate feedback information that needs to be received is greater than or equal to a first priority threshold, the terminal device determines the at least one piece of to-be-received feedback information, where the at least one piece of to-be-received feedback information belongs to the at least one piece of candidate feedback information that needs to be received.
  • the terminal device may determine the at least one piece of to-be-sent feedback information based on the first reference value of the quality of service level of the data information corresponding to the at least one piece of candidate feedback information that needs to be sent. This helps resolve a collision caused in a sending process of the feedback information.
  • the terminal device may determine the at least one piece of to-be-received feedback information based on the first reference value of the quality of service level of the data information corresponding to the at least one piece of candidate feedback information that needs to be received. This helps resolve a collision caused in a receiving process of the feedback information.
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received;
  • the terminal device determines the at least one piece of to-be-sent feedback information and/or the at least one piece of to-be-received feedback information based on the first reference value of the quality of service level of the data information corresponding to the at least one piece of candidate feedback information that needs to be sent, and/or based on the second reference value of the quality of service level of the data information corresponding to the at least one piece of candidate feedback information that needs to be received. This helps resolve a collision caused in the receiving and/or sending process of the feedback information.
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received; and when a first reference value of a quality of service level of data information corresponding to the at least one piece of candidate feedback information that needs to be sent is greater than or equal to a second reference value of a quality of service level of data information corresponding to the at least one piece of candidate feedback information that needs to be received, the terminal device determines the at least one piece of to-be-sent feedback information, where the at least one piece of to-be-sent feedback information belongs to the at least one piece of candidate feedback information that needs to be sent; or when a first reference value of a quality of service level of data information corresponding to the at least one piece of candidate feedback information that needs to be sent is less than or equal to a second reference value of a quality of service level of data information corresponding to the at least one piece of candidate feedback information that needs to be received, the terminal device determines the at least one piece of to-
  • the terminal device determines the at least one piece of to-be-sent feedback information or the at least one piece of to-be-received feedback information based on the first reference value of the quality of service level of the data information corresponding to the at least one piece of candidate feedback information that needs to be sent, and based on the second reference value of the quality of service level of the data information corresponding to the at least one piece of candidate feedback information that needs to be received. This helps resolve a collision caused in the receiving and/or sending process of the feedback information.
  • the first reference value is an average value of quality of service levels of data information corresponding to all feedback information in the at least one piece of candidate feedback information that needs to be sent, or the first reference value is an average value of quality of service levels of data information corresponding to a first feedback information set in the at least one piece of candidate feedback information that needs to be sent, where the first feedback information set includes the first N pieces of feedback information, in descending order of quality of service levels of corresponding data information, in the at least one piece of candidate feedback information that needs to be sent, and N is a positive integer greater than or equal to 1; and the second reference value is an average value of quality of service levels of data information corresponding to all feedback information in the at least one piece of candidate feedback information that needs to be received, or the second reference value is an average value of quality of service levels of data information corresponding to a second feedback information set in the at least one piece of candidate feedback information that needs to be received, where the second feedback information set includes the first M pieces of feedback information, in descending order of quality of service levels of corresponding data
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent; and when the first quantity of the at least one piece of candidate feedback information that needs to be sent is greater than or equal to a first threshold, the terminal device determines the at least one piece of to-be-sent feedback information, where the at least one piece of to-be-sent feedback information belongs to the at least one piece of candidate feedback information that needs to be sent.
  • the terminal device may determine the at least one piece of to-be-sent feedback information based on the first quantity of the at least one piece of candidate feedback information that needs to be sent. This helps resolve a collision caused in the sending process of the feedback information.
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be received; and when the second quantity of the at least one piece of candidate feedback information that needs to be received is greater than or equal to a first threshold, the terminal device determines the at least one piece of to-be-received feedback information, where the at least one piece of to-be-received feedback information belongs to the at least one piece of candidate feedback information that needs to be received.
  • the terminal device may determine the at least one piece of to-be-received feedback information based on the second quantity of the at least one piece of candidate feedback information that needs to be received. This helps resolve a collision caused in the receiving process of the feedback information.
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received;
  • the terminal device determines the at least one piece of to-be-sent feedback information and/or the at least one piece of to-be-received feedback information based on the first quantity of the at least one piece of candidate feedback information that needs to be sent and/or the second quantity of the at least one piece of candidate feedback information that needs to be received. This helps resolve a collision caused in the receiving and/or sending process of the feedback information.
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received;
  • the terminal device determines the at least one piece of to-be-sent feedback information or the at least one piece of to-be-received feedback information based on the first quantity of the at least one piece of candidate feedback information that needs to be sent and the second quantity of the at least one piece of candidate feedback information that needs to be received. This helps resolve a collision caused in the receiving and/or sending process of the feedback information.
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received;
  • the terminal device determines the at least one piece of to-be-sent feedback information or the at least one piece of to-be-received feedback information based on the first quantity of the at least one piece of candidate feedback information that needs to be sent and the second quantity of the at least one piece of candidate feedback information that needs to be received. This helps resolve a collision caused in the receiving and/or sending process of the feedback information.
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received; and when the at least one piece of candidate feedback information that needs to be sent is first-type candidate feedback information, the at least one piece of candidate feedback information that needs to be received is second-type candidate feedback information, a type of data corresponding to the first-type candidate feedback information is unicast, and a type of data corresponding to the second-type candidate feedback information is groupcast/multicast, the terminal device determines the at least one piece of to-be-sent feedback information, where the at least one piece of to-be-sent feedback information belongs to the first-type candidate feedback information.
  • the type of the data corresponding to the candidate feedback information determined by the terminal device includes the type of the data corresponding to the first-type candidate feedback information and the type of the data corresponding to the second-type candidate feedback information, and the terminal device determines the at least one piece of to-be-sent feedback information based on the type of the data corresponding to the at least one piece of candidate feedback information that needs to be sent and the type of the data corresponding to the at least one piece of candidate feedback information that needs to be received. This helps resolve a collision caused in the receiving and/or sending process of the feedback information.
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received; and when the at least one piece of candidate feedback information that needs to be sent is second-type candidate feedback information, and the at least one piece of candidate feedback information that needs to be received is first-type candidate feedback information, the terminal device determines the at least one piece of to-be-received feedback information, where the at least one piece of to-be-received feedback information belongs to the first-type candidate feedback information.
  • the type of the data corresponding to the candidate feedback information determined by the terminal device includes the type of the data corresponding to the first-type candidate feedback information and the type of the data corresponding to the second-type candidate feedback information, and the terminal device determines the at least one piece of to-be-received feedback information based on the type of the data corresponding to the at least one piece of candidate feedback information that needs to be sent and the type of the data corresponding to the at least one piece of candidate feedback information that needs to be received. This helps resolve a collision caused in the receiving and/or sending process of the feedback information.
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent; and when the at least one piece of candidate feedback information that needs to be sent includes first-type candidate feedback information and second-type candidate feedback information, the terminal device determines the at least one piece of to-be-sent feedback information, where the at least one piece of to-be-sent feedback information belongs to the first-type candidate feedback information.
  • the type of the data corresponding to the candidate feedback information determined by the terminal device includes the type of the data corresponding to the first-type candidate feedback information and the type of the data corresponding to the second-type candidate feedback information, and the terminal device determines the at least one piece of to-be-sent feedback information based on the type of the data corresponding to the at least one piece of candidate feedback information that needs to be sent. This helps resolve a collision caused in the sending process of the feedback information.
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be received; and when the at least one piece of candidate feedback information that needs to be received includes first-type candidate feedback information and second-type candidate feedback information, the terminal device determines the at least one piece of to-be-received feedback information, where the at least one piece of to-be-received feedback information belongs to the first-type candidate feedback information.
  • the type of the data corresponding to the candidate feedback information determined by the terminal device includes the type of the data corresponding to the first-type candidate feedback information and the type of the data corresponding to the second-type candidate feedback information, and the terminal device determines the at least one piece of to-be-received feedback information based on the type of the data corresponding to the at least one piece of candidate feedback information that needs to be received. This helps resolve a collision caused in the receiving process of the feedback information.
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received; and when the at least one piece of candidate feedback information that needs to be sent includes first-type candidate feedback information and second-type candidate feedback information, and the at least one piece of candidate feedback information that needs to be received includes the first-type candidate feedback information and the second-type candidate feedback information, the terminal device determines the at least one piece of to-be-sent feedback information and/or the at least one piece of to-be-received feedback information, where the at least one piece of to-be-sent feedback information belongs to the first-type candidate feedback information, and the at least one piece of to-be-received feedback information belongs to the first-type candidate feedback information.
  • the terminal device determines the at least one piece of to-be-sent feedback information and/or the at least one piece of to-be-received feedback information based on the type of the data corresponding to the at least one piece of candidate feedback information. This helps resolve a collision caused in the receiving and/or sending process of the feedback information.
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received; and when the at least one piece of candidate feedback information that needs to be sent is third-type candidate feedback information, the at least one piece of candidate feedback information that needs to be received is fourth-type candidate feedback information, a type of data corresponding to the third-type candidate feedback information is a reservation type, and a type of data corresponding to the fourth-type candidate feedback information is a scheduling type, the terminal device determines the at least one piece of to-be-sent feedback information, where the at least one piece of to-be-sent feedback information belongs to the third-type candidate feedback information.
  • the terminal device determines the at least one piece of to-be-sent feedback information based on the type of the data corresponding to the at least one piece of candidate feedback information. This helps resolve a collision caused in the receiving and/or sending process of the feedback information.
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received; and when the at least one piece of candidate feedback information that needs to be sent is fourth-type candidate feedback information, and the at least one piece of candidate feedback information that needs to be received is third-type candidate feedback information, the terminal device determines the at least one piece of to-be-received feedback information, where the at least one piece of to-be-received feedback information belongs to the third-type candidate feedback information.
  • the terminal device determines the at least one piece of to-be-received feedback information based on the type of the data corresponding to the at least one piece of candidate feedback information. This helps resolve a collision caused in the receiving and/or sending process of the feedback information.
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent; and when the at least one piece of candidate feedback information that needs to be sent includes third-type candidate feedback information and fourth-type candidate feedback information, the terminal device determines the at least one piece of to-be-sent feedback information, where the at least one piece of to-be-sent feedback information belongs to the third-type candidate feedback information.
  • the terminal device determines the at least one piece of to-be-sent feedback information based on the type of the data corresponding to the at least one piece of candidate feedback information. This helps resolve a collision caused in the sending process of the feedback information.
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be received; and when the at least one piece of candidate feedback information that needs to be received includes third-type candidate feedback information and fourth-type candidate feedback information, the terminal device determines the at least one piece of to-be-received feedback information, where the at least one piece of to-be-sent feedback information belongs to the third-type candidate feedback information.
  • the terminal device determines the at least one piece of to-be-received feedback information based on the type of the data corresponding to the at least one piece of candidate feedback information. This helps resolve a collision caused in the receiving process of the feedback information.
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received; and when the at least one piece of candidate feedback information that needs to be sent includes third-type candidate feedback information and fourth-type candidate feedback information, and the at least one piece of candidate feedback information that needs to be received includes the third-type candidate feedback information and the fourth-type candidate feedback information, the terminal device determines the at least one piece of to-be-sent feedback information and/or the at least one piece of to-be-received feedback information, where the at least one piece of to-be-sent feedback information belongs to the third-type candidate feedback information, and the at least one piece of to-be-received feedback information belongs to the third-type candidate feedback information.
  • the terminal device determines the at least one piece of to-be-sent feedback information and/or the at least one piece of to-be-received feedback information based on the type of the data corresponding to the at least one piece of candidate feedback information. This helps resolve a collision caused in the receiving and/or sending process of the feedback information.
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received; and when the at least one piece of candidate feedback information that needs to be sent is fifth-type candidate feedback information, the at least one piece of candidate feedback information that needs to be received is sixth-type candidate feedback information, a type of data corresponding to the fifth-type candidate feedback information is feeding back only negative acknowledgement information on a feedback resource, and a type of data corresponding to the sixth-type candidate feedback information is feeding back acknowledgement information or the negative acknowledgement information on a feedback resource corresponding to the terminal device, the terminal device determines the at least one piece of to-be-sent feedback information, where the at least one piece of to-be-sent feedback information belongs to the fifth-type candidate feedback information.
  • the terminal device determines the at least one piece of to-be-sent feedback information based on the type of the data corresponding to the at least one piece of candidate feedback information. This helps resolve a collision caused in the receiving and/or sending process of the feedback information.
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received; and when the at least one piece of candidate feedback information that needs to be sent is sixth-type candidate feedback information, and the at least one piece of candidate feedback information that needs to be received is fifth-type candidate feedback information, the terminal device determines the at least one piece of to-be-received feedback information, where the at least one piece of to-be-received feedback information belongs to the fifth-type candidate feedback information.
  • the terminal device determines the at least one piece of to-be-received feedback information based on the type of the data corresponding to the at least one piece of candidate feedback information. This helps resolve a collision caused in the receiving and/or sending process of the feedback information.
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent; and when the at least one piece of candidate feedback information that needs to be sent includes fifth-type candidate feedback information and sixth-type candidate feedback information, the terminal device determines the at least one piece of to-be-sent feedback information, where the at least one piece of to-be-sent feedback information belongs to the fifth-type candidate feedback information.
  • the terminal device determines the at least one piece of to-be-sent feedback information based on the type of the data corresponding to the at least one piece of candidate feedback information. This helps resolve a collision caused in the sending process of the feedback information.
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be received; and when the at least one piece of candidate feedback information that needs to be received includes fifth-type candidate feedback information and sixth-type candidate feedback information, the terminal device determines the at least one piece of to-be-received feedback information, where the at least one piece of to-be-received feedback information belongs to the fifth-type candidate feedback information.
  • the terminal device determines the at least one piece of to-be-received feedback information based on the type of the data corresponding to the at least one piece of candidate feedback information. This helps resolve a collision caused in the receiving process of the feedback information.
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received; and when the at least one piece of candidate feedback information that needs to be sent includes fifth-type candidate feedback information and sixth-type candidate feedback information, and the at least one piece of candidate feedback information that needs to be received includes the fifth-type candidate feedback information and the sixth-type candidate feedback information, the terminal device determines the at least one piece of to-be-sent feedback information and/or the at least one piece of to-be-received feedback information, where the at least one piece of to-be-sent feedback information belongs to the fifth-type candidate feedback information, and the at least one piece of to-be-received feedback information belongs to the fifth-type candidate feedback information.
  • the terminal device determines the at least one piece of to-be-sent feedback information and/or the at least one piece of to-be-received feedback information based on the type of the data corresponding to the at least one piece of candidate feedback information. This helps resolve a collision caused in the receiving and/or sending process of the feedback information.
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received; and when a first feedback period of the at least one piece of candidate feedback information that needs to be sent is longer than or equal to a second feedback period of the at least one piece of candidate feedback information that needs to be received, the terminal device determines the at least one piece of to-be-sent feedback information, where the at least one piece of to-be-sent feedback information belongs to the at least one piece of candidate feedback information that needs to be sent.
  • the terminal device determines the at least one piece of to-be-sent feedback information based on the feedback period of the at least one piece of candidate feedback information. This helps resolve a collision caused in the receiving and/or sending process of the feedback information.
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received; and when a first feedback period of the at least one piece of candidate feedback information that needs to be sent is shorter than or equal to a second feedback period of the at least one piece of candidate feedback information that needs to be received, the terminal device determines the at least one piece of to-be-received feedback information, where the at least one piece of to-be-received feedback information belongs to the at least one piece of candidate feedback information that needs to be received.
  • the terminal device determines the at least one piece of to-be-received feedback information based on the feedback period of the at least one piece of candidate feedback information. This helps resolve a collision caused in the receiving and/or sending process of the feedback information.
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent; and when the at least one piece of candidate feedback information that needs to be sent includes first candidate feedback information and second candidate feedback information, and a feedback period of the first candidate feedback information is longer than a feedback period of the second candidate feedback information, the terminal device determines the at least one piece of to-be-sent feedback information, where the at least one piece of to-be-sent feedback information belongs to the first candidate feedback information.
  • the terminal device determines the at least one piece of to-be-sent feedback information based on the feedback period of the at least one piece of candidate feedback information that needs to be sent. This helps resolve a collision caused in the sending process of the feedback information.
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be received; and when the at least one piece of candidate feedback information that needs to be received includes third candidate feedback information and fourth candidate feedback information, and a feedback period of the third candidate feedback information is longer than a feedback period of the fourth candidate feedback information, the terminal device determines the at least one piece of to-be-received feedback information, where the at least one piece of to-be-received feedback information belongs to the third candidate feedback information.
  • the terminal device determines the at least one piece of to-be-received feedback information based on the feedback period of the at least one piece of candidate feedback information that needs to be received. This helps resolve a collision caused in the receiving process of the feedback information.
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received; and when the at least one piece of candidate feedback information that needs to be sent includes first candidate feedback information and second candidate feedback information, a feedback period of the first candidate feedback information is longer than a feedback period of the second candidate feedback information, the at least one piece of candidate feedback information that needs to be sent includes fifth-type candidate feedback information and sixth-type candidate feedback information, and the at least one piece of candidate feedback information that needs to be received includes the fifth-type candidate feedback information and the sixth-type candidate feedback information, the terminal device determines the at least one piece of to-be-sent feedback information and/or the at least one piece of to-be-received feedback information, where the at least one piece of to-be-sent feedback information belongs to the first candidate feedback information, and the at least one piece of to-be-received feedback information belongs to the third candidate feedback information.
  • the terminal device determines the at least one piece of to-be-sent feedback information and/or the at least one piece of to-be-received feedback information based on the feedback period of the at least one piece of candidate feedback information. This helps resolve a collision caused in the receiving and/or sending process of the feedback information.
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent; and when the at least one piece of candidate feedback information that needs to be sent includes seventh-type candidate feedback information and eighth-type candidate feedback information, a feedback type of the seventh-type candidate feedback information is an acknowledgement feedback, and a feedback type of the eighth-type candidate feedback information is a negative acknowledgement feedback, the terminal device determines the at least one piece of to-be-sent feedback information, where the at least one piece of to-be-sent feedback information belongs to the eighth-type candidate feedback information.
  • the terminal device determines the at least one piece of to-be-sent feedback information based on the feedback type of the at least one piece of candidate feedback information that needs to be sent. This helps resolve a collision caused in the sending process of the feedback information.
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be received; and when the at least one piece of candidate feedback information that needs to be received includes seventh-type candidate feedback information and eighth-type candidate feedback information, the terminal device determines the at least one piece of to-be-received feedback information, where the at least one piece of to-be-received feedback information belongs to the eighth-type candidate feedback information.
  • the terminal device determines the at least one piece of to-be-received feedback information based on the feedback type of the at least one piece of candidate feedback information that needs to be received. This helps resolve a collision caused in the receiving process of the feedback information.
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent and the at least one piece of feedback information that needs to be received; and when the at least one piece of candidate feedback information that needs to be sent includes seventh-type candidate feedback information and eighth-type candidate feedback information, and the at least one piece of candidate feedback information that needs to be received includes the seventh-type candidate feedback information and the eighth-type candidate feedback information, the terminal device determines the at least one piece of to-be-sent feedback information and/or the at least one piece of to-be-received feedback information, where the at least one piece of to-be-sent feedback information belongs to the eighth-type candidate feedback information, and the at least one piece of to-be-received feedback information belongs to the eighth-type candidate feedback information.
  • the terminal device determines the at least one piece of to-be-sent feedback information and/or the at least one piece of to-be-received feedback information based on the feedback type of the at least one piece of candidate feedback information. This helps resolve a collision caused in the receiving and/or sending process of the feedback information.
  • the method further includes: If the data information corresponding to the at least one piece of to-be-sent feedback information is reserved data (that is, a corresponding type is a reservation type), or the data information corresponding to the at least one piece of to-be-received feedback information is reserved data, the data information corresponding to the at least one piece of to-be-sent feedback information or the data information corresponding to the at least one piece of to-be-received feedback information further includes indication information, where the indication information is used to indicate that a reserved link resource continues to be used or is released.
  • the indication information may be represented by SCI, and occupies at least one bit (bit), for example, one bit.
  • the reserved resource when transmission of the reserved data is completed, the reserved resource is released, and the one bit is set to a specific value, namely, 1, indicating that the resource reserved in the SCI is released or invalid.
  • the reserved resource When transmission of the reserved data is not completed, the reserved resource continues to be used and does not need to be released, and the one bit is set to a specific value, namely, 0, indicating that the resource reserved in the SCI continues to be valid and used.
  • the terminal device can learn whether the reserved resource continues to be used or is invalid only by detecting a bit value of the SCI without monitoring the feedback information.
  • a first data information transmission method includes: A terminal device determines at least one piece of to-be-sent first data information and/or at least one piece of to-be-received first data information in at least one piece of candidate first data information, where the at least one piece of candidate first data information includes at least one piece of candidate first data information that needs to be sent and/or at least one piece of candidate first data information that needs to be received, and the at least one piece of candidate first data information that needs to be sent and/or the at least one piece of candidate first data information that needs to be received corresponds to a same time domain resource; and the terminal device sends the at least one piece of to-be-sent first data information, and/or the terminal device receives the at least one piece of to-be-received first data information.
  • the terminal device may be a vehicle-mounted device, a device used by a user, a roadside unit, a network device, or the like.
  • a technology used by the terminal device in a data receiving and/or sending process may be a D2D technology, a V2X technology, or the like.
  • the V2X technology may be based on an LTE-V2X technology, an NR-V2X technology, and the like.
  • the first data information may be one or more of the following: reserved data, scheduled data, reserved periodic data, scheduled periodic data, reserved data with different periods, scheduled data with different periods, or the like.
  • the terminal device determines that the at least one piece of candidate first data information that needs to be sent and/or the at least one piece of candidate first data information that needs to be received corresponds to the same time domain resource, the terminal device determines that a collision is caused between data that needs to be sent and/or data that needs to be received.
  • the time domain resource includes one or more slots, one or more symbols, another time domain granularity, or the like.
  • the another time granularity may be a mini-slot or a time unit shorter than one symbol.
  • the terminal device may determine the at least one piece of to-be-sent first data information or the at least one piece of to-be-received first data information in the at least one piece of candidate first data information, and then the terminal device sends the at least one piece of to-be-sent first data information, or receives the at least one piece of to-be-received first data information.
  • the terminal device may alternatively determine the at least one piece of to-be-sent first data information and the at least one piece of to-be-received first data information in the at least one piece of candidate first data information, and then the terminal device simultaneously sends the at least one piece of to-be-sent first data information and receives the at least one piece of to-be-received first data information.
  • the terminal device may determine the at least one piece of to-be-sent first data information in the at least one piece of candidate first data information that needs to be sent, and then the terminal device sends the at least one piece of to-be-sent first data information, where the at least one piece of to-be-sent first data information does not exceed the sending capability of the terminal device.
  • the terminal device determines the at least one piece of to-be-sent first data information in the at least one piece of candidate first data information, and then sends the at least one piece of to-be-sent first data information.
  • the terminal device determines the at least one piece of to-be-received first data information in the at least one piece of candidate first data information, and then receives the at least one piece of to-be-received first data information.
  • the terminal device determines the at least one piece of to-be-sent first data information in the at least one piece of candidate first data information, and then sends the at least one piece of to-be-sent first data information; or the terminal device determines the at least one piece of to-be-received first data information in the at least one piece of candidate first data information, and then receives the at least one piece of to-be-received first data information.
  • the terminal device determines the at least one piece of to-be-sent first data information and the at least one piece of to-be-received first data information in the at least one piece of candidate first data information, and then sends the at least one piece of to-be-sent first data information and receives the at least one piece of to-be-received first data information.
  • the terminal device may select the at least one piece of to-be-sent first data information and/or the at least one piece of to-be-received first data information from the at least one piece of candidate first data information that needs to be sent and/or the at least one piece of candidate first data information that needs to be received, and then send the at least one piece of to-be-sent first data information, and/or receive the at least one piece of to-be-received first data information. Therefore, this method resolves a collision caused in a receiving and/or sending process of first data information, and ensures efficient and accurate receiving and/or sending of the first data information.
  • the at least one piece of candidate first data information that needs to be sent and/or the at least one piece of first data information that needs to be received corresponds to a same first time domain resource; and the terminal device sends the at least one piece of to-be-sent first data information on a second time-frequency resource, and/or the terminal device receives the at least one piece of to-be-received first data information on a second time-frequency resource, where the second time-frequency resource is the same as the first time-frequency resource, the second time-frequency resource includes the first time-frequency resource, or the second time-frequency resource partially overlaps the first time-frequency resource.
  • the terminal device may determine the at least one piece of to-be-sent first data information and/or the at least one piece of to-be-received first data information in the at least one piece of candidate first data information in the following several manners:
  • the quality of service level may include a reference value such as a QoS level.
  • a specific QoS level may include a reference value such as a PPPP/5QI, and may further include reference values such as availability, a throughput, a delay, and a packet loss rate.
  • the type of the data may include unicast and groupcast/multicast, include a reservation type and a scheduling type, or include an option 1 feedback and an option 2 feedback.
  • the feedback type may include an acknowledgement feedback and a negative acknowledgement feedback.
  • the terminal device determines the at least one piece of to-be-sent first data information and/or the at least one piece of to-be-received first data information based on the quality of service level of the data information corresponding to the at least one piece of candidate first data information:
  • the terminal device determines the at least one piece of to-be-sent first data information and/or the at least one piece of to-be-received first data information based on the first quantity of the at least one piece of candidate first data information that needs to be sent and/or the second quantity of the at least one piece of candidate first data information that needs to be received:
  • the terminal device determines the at least one piece of to-be-sent first data information and/or the at least one piece of to-be-received first data information based on the type of the data corresponding to the at least one piece of candidate first data information:
  • the terminal device determines the at least one piece of to-be-sent first data information and/or the at least one piece of to-be-received first data information based on the feedback period of the at least one piece of candidate first data information:
  • the terminal device determines the at least one piece of to-be-sent first data information and/or the at least one piece of to-be-received first data information based on the feedback type of the at least one piece of candidate first data information includes:
  • the terminal device may determine the at least one piece of to-be-sent first data information and/or the at least one piece of to-be-received first data information based on a quality of service level, a quantity of pieces of candidate first data information, a type of data corresponding to the candidate first data information, a feedback period of the candidate first data information, or a feedback type of the candidate first data information. This helps resolve a collision caused in the receiving and/or sending process of the first data information.
  • the at least one piece of candidate first data information includes the at least one piece of candidate first data information that needs to be sent; and when a first reference value of a quality of service level of data information corresponding to the at least one piece of candidate first data information that needs to be sent is greater than or equal to a first priority threshold, the terminal device determines the at least one piece of to-be-sent first data information, where the at least one piece of to-be-sent first data information belongs to the at least one piece of candidate first data information that needs to be sent.
  • the terminal device may determine the at least one piece of to-be-sent first data information based on the first reference value of the quality of service level of the data information corresponding to the at least one piece of candidate first data information that needs to be sent. This helps resolve a collision caused in a sending process of the first data information.
  • the at least one piece of candidate first data information includes the at least one piece of candidate first data information that needs to be received; and when a second reference value of a quality of service level of data information corresponding to the at least one piece of candidate first data information that needs to be received is greater than or equal to a first priority threshold, the terminal device determines the at least one piece of to-be-received first data information, where the at least one piece of to-be-received first data information belongs to the at least one piece of candidate first data information that needs to be received.
  • the terminal device may determine the at least one piece of to-be-sent first data information based on the first reference value of the quality of service level of the data information corresponding to the at least one piece of candidate first data information that needs to be sent. This helps resolve a collision caused in a sending process of the first data information.
  • the terminal device may determine the at least one piece of to-be-received first data information based on the first reference value of the quality of service level of the data information corresponding to the at least one piece of candidate first data information that needs to be received. This helps resolve a collision caused in a receiving process of the first data information.
  • the at least one piece of candidate first data information includes the at least one piece of candidate first data information that needs to be sent and the at least one piece of candidate first data information that needs to be received;
  • the terminal device determines the at least one piece of to-be-sent first data information and/or the at least one piece of to-be-received first data information based on the first reference value of the quality of service level of the data information corresponding to the at least one piece of candidate first data information that needs to be sent, and/or based on the second reference value of the quality of service level of the data information corresponding to the at least one piece of candidate first data information that needs to be received. This helps resolve a collision caused in the receiving and/or sending process of the first data information.
  • the at least one piece of candidate first data information includes the at least one piece of candidate first data information that needs to be sent and the at least one piece of candidate first data information that needs to be received;
  • the terminal device determines the at least one piece of to-be-sent first data information or the at least one piece of to-be-received first data information based on the first reference value of the quality of service level of the data information corresponding to the at least one piece of candidate first data information that needs to be sent, and based on the second reference value of the quality of service level of the data information corresponding to the at least one piece of candidate first data information that needs to be received. This helps resolve a collision caused in the receiving and/or sending process of the first data information.
  • the first reference value is an average value of quality of service levels of data information corresponding to all first data information in the at least one piece of candidate first data information that needs to be sent, or the first reference value is an average value of quality of service levels of data information corresponding to a first data information set in the at least one piece of candidate first data information that needs to be sent, where the first data information set includes the first N pieces of first data information, in descending order of quality of service levels of corresponding data information, in the at least one piece of candidate first data information that needs to be sent, and N is a positive integer greater than or equal to 1; and the second reference value is an average value of quality of service levels of data information corresponding to all first data information in the at least one piece of candidate first data information that needs to be received, or the second reference value is an average value of quality of service levels of data information corresponding to a second data information set in the at least one piece of candidate first data information that needs to be received, where the second data information set includes the first M pieces of first data information, in descending order
  • the at least one piece of candidate first data information includes the at least one piece of candidate first data information that needs to be sent; and when the first quantity of the at least one piece of candidate first data information that needs to be sent is greater than or equal to a first threshold, the terminal device determines the at least one piece of to-be-sent first data information, where the at least one piece of to-be-sent first data information belongs to the at least one piece of candidate first data information that needs to be sent.
  • the terminal device may determine the at least one piece of to-be-sent first data information based on the first quantity of the at least one piece of candidate first data information that needs to be sent. This helps resolve a collision caused in the sending process of the first data information.
  • the at least one piece of candidate first data information includes the at least one piece of candidate first data information that needs to be received; and when the second quantity of the at least one piece of candidate first data information that needs to be received is greater than or equal to a first threshold, the terminal device determines the at least one piece of to-be-received first data information, where the at least one piece of to-be-received first data information belongs to the at least one piece of candidate first data information that needs to be received.
  • the terminal device may determine the at least one piece of to-be-received first data information based on the second quantity of the at least one piece of candidate first data information that needs to be received. This helps resolve a collision caused in the receiving process of the first data information.
  • the at least one piece of candidate first data information includes the at least one piece of candidate first data information that needs to be sent and the at least one piece of candidate first data information that needs to be received;
  • the terminal device determines the at least one piece of to-be-sent first data information and/or the at least one piece of to-be-received first data information based on the first quantity of the at least one piece of candidate first data information that needs to be sent and/or the second quantity of the at least one piece of candidate first data information that needs to be received. This helps resolve a collision caused in the receiving and/or sending process of the first data information.
  • the at least one piece of candidate first data information includes the at least one piece of candidate first data information that needs to be sent and the at least one piece of candidate first data information that needs to be received;
  • the terminal device determines the at least one piece of to-be-sent first data information or the at least one piece of to-be-received first data information based on the first quantity of the at least one piece of candidate first data information that needs to be sent and the second quantity of the at least one piece of candidate first data information that needs to be received. This helps resolve a collision caused in the receiving and/or sending process of the first data information.
  • the at least one piece of candidate first data information includes the at least one piece of candidate first data information that needs to be sent and the at least one piece of candidate first data information that needs to be received;
  • the terminal device determines the at least one piece of to-be-sent first data information or the at least one piece of to-be-received first data information based on the first quantity of the at least one piece of candidate first data information that needs to be sent and the second quantity of the at least one piece of candidate first data information that needs to be received. This helps resolve a collision caused in the receiving and/or sending process of the first data information.
  • the at least one piece of candidate first data information includes the at least one piece of candidate first data information that needs to be sent and the at least one piece of candidate first data information that needs to be received; and when the at least one piece of candidate first data information that needs to be sent is first-type candidate first data information, the at least one piece of candidate first data information that needs to be received is second-type candidate first data information, a type of data corresponding to the first-type candidate first data information is unicast, and a type of data corresponding to the second-type candidate first data information is groupcast/multicast, the terminal device determines the at least one piece of to-be-sent first data information, where the at least one piece of to-be-sent first data information belongs to the first-type candidate first data information.
  • the type of the data corresponding to the candidate first data information determined by the terminal device includes the type of the data corresponding to the first-type candidate first data information and the type of the data corresponding to the second-type candidate first data information, and the terminal device determines the at least one piece of to-be-sent first data information based on the type of the data corresponding to the at least one piece of candidate first data information that needs to be sent and the type of the data corresponding to the at least one piece of candidate first data information that needs to be received. This helps resolve a collision caused in the receiving and/or sending process of the first data information.
  • the at least one piece of candidate first data information includes the at least one piece of candidate first data information that needs to be sent and the at least one piece of candidate first data information that needs to be received; and when the at least one piece of candidate first data information that needs to be sent is second-type candidate first data information, and the at least one piece of candidate first data information that needs to be received is first-type candidate first data information, the terminal device determines the at least one piece of to-be-received first data information, where the at least one piece of to-be-received first data information belongs to the first-type candidate first data information.
  • the type of the data corresponding to the candidate first data information determined by the terminal device includes the type of the data corresponding to the first-type candidate first data information and the type of the data corresponding to the second-type candidate first data information, and the terminal device determines the at least one piece of to-be-received first data information based on the type of the data corresponding to the at least one piece of candidate first data information that needs to be sent and the type of the data corresponding to the at least one piece of candidate first data information that needs to be received. This helps resolve a collision caused in the receiving and/or sending process of the first data information.
  • the at least one piece of candidate first data information includes the at least one piece of candidate first data information that needs to be sent; and when the at least one piece of candidate first data information that needs to be sent includes first-type candidate first data information and second-type candidate first data information, the terminal device determines the at least one piece of to-be-sent first data information, where the at least one piece of to-be-sent first data information belongs to the first-type candidate first data information.
  • the type of the data corresponding to the candidate first data information determined by the terminal device includes the type of the data corresponding to the first-type candidate first data information and the type of the data corresponding to the second-type candidate first data information, and the terminal device determines the at least one piece of to-be-sent first data information based on the type of the data corresponding to the at least one piece of candidate first data information that needs to be sent. This helps resolve a collision caused in the sending process of the first data information.
  • the at least one piece of candidate first data information includes the at least one piece of candidate first data information that needs to be received; and when the at least one piece of candidate first data information that needs to be received includes first-type candidate first data information and second-type candidate first data information, the terminal device determines the at least one piece of to-be-received first data information, where the at least one piece of to-be-received first data information belongs to the first-type candidate first data information.
  • the type of the data corresponding to the candidate first data information determined by the terminal device includes the type of the data corresponding to the first-type candidate first data information and the type of the data corresponding to the second-type candidate first data information, and the terminal device determines the at least one piece of to-be-received first data information based on the type of the data corresponding to the at least one piece of candidate first data information that needs to be received. This helps resolve a collision caused in the receiving process of the first data information.
  • the at least one piece of candidate first data information includes the at least one piece of candidate first data information that needs to be sent and the at least one piece of candidate first data information that needs to be received; and when the at least one piece of candidate first data information that needs to be sent includes first-type candidate first data information and second-type candidate first data information, and the at least one piece of candidate first data information that needs to be received includes the first-type candidate first data information and the second-type candidate first data information, the terminal device determines the at least one piece of to-be-sent first data information and/or the at least one piece of to-be-received first data information, where the at least one piece of to-be-sent first data information belongs to the first-type candidate first data information, and the at least one piece of to-be-received first data information belongs to the first-type candidate first data information.
  • the terminal device determines the at least one piece of to-be-sent first data information and/or the at least one piece of to-be-received first data information based on the type of the data corresponding to the at least one piece of candidate first data information. This helps resolve a collision caused in the receiving and/or sending process of the first data information.
  • the at least one piece of candidate first data information includes the at least one piece of candidate first data information that needs to be sent and the at least one piece of candidate first data information that needs to be received; and when the at least one piece of candidate first data information that needs to be sent is third-type candidate first data information, the at least one piece of candidate first data information that needs to be received is fourth-type candidate first data information, a type of data corresponding to the third-type candidate first data information is a reservation type, and a type of data corresponding to the fourth-type candidate first data information is a scheduling type, the terminal device determines the at least one piece of to-be-sent first data information, where the at least one piece of to-be-sent first data information belongs to the third-type candidate first data information.
  • the terminal device determines the at least one piece of to-be-sent first data information based on the type of the data corresponding to the at least one piece of candidate first data information. This helps resolve a collision caused in the receiving and/or sending process of the first data information.
  • the at least one piece of candidate first data information includes the at least one piece of candidate first data information that needs to be sent and the at least one piece of candidate first data information that needs to be received; and when the at least one piece of candidate first data information that needs to be sent is fourth-type candidate first data information, and the at least one piece of candidate first data information that needs to be received is third-type candidate first data information, the terminal device determines the at least one piece of to-be-received first data information, where the at least one piece of to-be-received first data information belongs to the third-type candidate first data information.
  • the terminal device determines the at least one piece of to-be-received first data information based on the type of the data corresponding to the at least one piece of candidate first data information. This helps resolve a collision caused in the receiving and/or sending process of the first data information.
  • the at least one piece of candidate first data information includes the at least one piece of candidate first data information that needs to be sent; and when the at least one piece of candidate first data information that needs to be sent includes third-type candidate first data information and fourth-type candidate first data information, the terminal device determines the at least one piece of to-be-sent first data information, where the at least one piece of to-be-sent first data information belongs to the third-type candidate first data information.
  • the terminal device determines the at least one piece of to-be-sent first data information based on the type of the data corresponding to the at least one piece of candidate first data information. This helps resolve a collision caused in the sending process of the first data information.
  • the at least one piece of candidate first data information includes the at least one piece of candidate first data information that needs to be received; and when the at least one piece of candidate first data information that needs to be received includes third-type candidate first data information and fourth-type candidate first data information, the terminal device determines the at least one piece of to-be-received first data information, where the at least one piece of to-be-sent first data information belongs to the third-type candidate first data information.
  • the terminal device determines the at least one piece of to-be-received first data information based on the type of the data corresponding to the at least one piece of candidate first data information. This helps resolve a collision caused in the receiving process of the first data information.
  • the at least one piece of candidate first data information includes the at least one piece of candidate first data information that needs to be sent and the at least one piece of candidate first data information that needs to be received; and when the at least one piece of candidate first data information that needs to be sent includes third-type candidate first data information and fourth-type candidate first data information, and the at least one piece of candidate first data information that needs to be received includes the third-type candidate first data information and the fourth-type candidate first data information, the terminal device determines the at least one piece of to-be-sent first data information and/or the at least one piece of to-be-received first data information, where the at least one piece of to-be-sent first data information belongs to the third-type candidate first data information, and the at least one piece of to-be-received first data information belongs to the third-type candidate first data information.
  • the terminal device determines the at least one piece of to-be-sent first data information and/or the at least one piece of to-be-received first data information based on the type of the data corresponding to the at least one piece of candidate first data information. This helps resolve a collision caused in the receiving and/or sending process of the first data information.
  • the at least one piece of candidate first data information includes the at least one piece of candidate first data information that needs to be sent and the at least one piece of candidate first data information that needs to be received; and when the at least one piece of candidate first data information that needs to be sent is fifth-type candidate first data information, the at least one piece of candidate first data information that needs to be received is sixth-type candidate first data information, a type of data corresponding to the fifth-type candidate first data information is feeding back only negative acknowledgement information on a feedback resource, and a type of data corresponding to the sixth-type candidate first data information is feeding back acknowledgement information or the negative acknowledgement information on a feedback resource corresponding to the terminal device, the terminal device determines the at least one piece of to-be-sent first data information, where the at least one piece of to-be-sent first data information belongs to the fifth-type candidate first data information.
  • the terminal device determines the at least one piece of to-be-sent first data information based on the type of the data corresponding to the at least one piece of candidate first data information. This helps resolve a collision caused in the receiving and/or sending process of the first data information.
  • the at least one piece of candidate first data information includes the at least one piece of candidate first data information that needs to be sent and the at least one piece of candidate first data information that needs to be received; and when the at least one piece of candidate first data information that needs to be sent is sixth-type candidate first data information, and the at least one piece of candidate first data information that needs to be received is fifth-type candidate first data information, the terminal device determines the at least one piece of to-be-received first data information, where the at least one piece of to-be-received first data information belongs to the fifth-type candidate first data information.
  • the terminal device determines the at least one piece of to-be-received first data information based on the type of the data corresponding to the at least one piece of candidate first data information. This helps resolve a collision caused in the receiving and/or sending process of the first data information.
  • the at least one piece of candidate first data information includes the at least one piece of candidate first data information that needs to be sent; and when the at least one piece of candidate first data information that needs to be sent includes fifth-type candidate first data information and sixth-type candidate first data information, the terminal device determines the at least one piece of to-be-sent first data information, where the at least one piece of to-be-sent first data information belongs to the fifth-type candidate first data information.
  • the terminal device determines the at least one piece of to-be-sent first data information based on the type of the data corresponding to the at least one piece of candidate first data information. This helps resolve a collision caused in the sending process of the first data information.
  • the at least one piece of candidate first data information includes the at least one piece of candidate first data information that needs to be received; and when the at least one piece of candidate first data information that needs to be received includes the fifth-type candidate first data information and the sixth-type candidate first data information, the terminal device determines the at least one piece of to-be-received first data information, where the at least one piece of to-be-received first data information belongs to the fifth-type candidate first data information.
  • the terminal device determines the at least one piece of to-be-received first data information based on the type of the data corresponding to the at least one piece of candidate first data information. This helps resolve a collision caused in the receiving process of the first data information.
  • the at least one piece of candidate first data information includes the at least one piece of candidate first data information that needs to be sent and the at least one piece of candidate first data information that needs to be received; and when the at least one piece of candidate first data information that needs to be sent includes fifth-type candidate first data information and sixth-type candidate first data information, and the at least one piece of candidate first data information that needs to be received includes the fifth-type candidate first data information and the sixth-type candidate first data information, the terminal device determines the at least one piece of to-be-sent first data information and/or the at least one piece of to-be-received first data information, where the at least one piece of to-be-sent first data information belongs to the fifth-type candidate first data information, and the at least one piece of to-be-received first data information belongs to the fifth-type candidate first data information.
  • the terminal device determines the at least one piece of to-be-sent first data information and/or the at least one piece of to-be-received first data information based on the type of the data corresponding to the at least one piece of candidate first data information. This helps resolve a collision caused in the receiving and/or sending process of the first data information.
  • the at least one piece of candidate first data information includes the at least one piece of candidate first data information that needs to be sent and the at least one piece of candidate first data information that needs to be received; and when a first period of the at least one piece of candidate first data information that needs to be sent is longer than or equal to a second period of the at least one piece of candidate first data information that needs to be received, the terminal device determines the at least one piece of to-be-sent first data information, where the at least one piece of to-be-sent first data information belongs to the at least one piece of candidate first data information that needs to be sent.
  • the terminal device determines the at least one piece of to-be-sent first data information based on the period of the at least one piece of candidate first data information. This helps resolve a collision caused in the receiving and/or sending process of the first data information.
  • the at least one piece of candidate first data information includes the at least one piece of candidate first data information that needs to be sent and the at least one piece of candidate first data information that needs to be received; and when a first period of the at least one piece of candidate first data information that needs to be sent is shorter than or equal to a second period of the at least one piece of candidate first data information that needs to be received, the terminal device determines the at least one piece of to-be-received first data information, where the at least one piece of to-be-received first data information belongs to the at least one piece of candidate first data information that needs to be received.
  • the terminal device determines the at least one piece of to-be-received first data information based on the period of the at least one piece of candidate first data information. This helps resolve a collision caused in the receiving and/or sending process of the first data information.
  • the at least one piece of candidate first data information includes the at least one piece of candidate first data information that needs to be sent; and when the at least one piece of candidate first data information that needs to be sent includes first candidate first data information and second candidate first data information, and a period of the first candidate first data information is longer than a period of the second candidate first data information, the terminal device determines the at least one piece of to-be-sent first data information, where the at least one piece of to-be-sent first data information belongs to the first candidate first data information.
  • the terminal device determines the at least one piece of to-be-sent first data information based on the period of the at least one piece of candidate first data information that needs to be sent. This helps resolve a collision caused in the sending process of the first data information.
  • the at least one piece of candidate first data information includes the at least one piece of candidate first data information that needs to be received; and when the at least one piece of candidate first data information that needs to be received includes third candidate first data information and fourth candidate first data information, and a period of the third candidate first data information is longer than a period of the fourth candidate first data information, the terminal device determines the at least one piece of to-be-received first data information, where the at least one piece of to-be-received first data information belongs to the third candidate first data information.
  • the terminal device determines the at least one piece of to-be-received first data information based on the period of the at least one piece of candidate first data information that needs to be received. This helps resolve a collision caused in the receiving process of the first data information.
  • the at least one piece of candidate first data information includes the at least one piece of candidate first data information that needs to be sent and the at least one piece of candidate first data information that needs to be received; and when the at least one piece of candidate first data information that needs to be sent includes first candidate first data information and second candidate first data information, a period of the first candidate first data information is longer than a period of the second candidate first data information, the at least one piece of candidate first data information that needs to be sent includes fifth-type candidate first data information and sixth-type candidate first data information, and the at least one piece of candidate first data information that needs to be received includes the fifth-type candidate first data information and the sixth-type candidate first data information, the terminal device determines the at least one piece of to-be-sent first data information and/or the at least one piece of to-be-received first data information, where the at least one piece of to-be-sent first data information belongs to the first candidate first data information, and the at least one piece of to-be-received first data information belongs to the
  • the terminal device determines the at least one piece of to-be-sent first data information and/or the at least one piece of to-be-received first data information based on the period of the at least one piece of candidate first data information. This helps resolve a collision caused in the receiving and/or sending process of the first data information.
  • the at least one piece of candidate first data information includes the at least one piece of candidate first data information that needs to be sent; and when the at least one piece of candidate first data information that needs to be sent includes seventh-type candidate first data information and eighth-type candidate first data information, a feedback type of the seventh-type candidate first data information is an acknowledgement feedback, and a feedback type of the eighth-type candidate first data information is a negative acknowledgement feedback, the terminal device determines the at least one piece of to-be-sent first data information, where the at least one piece of to-be-sent first data information belongs to the eighth-type candidate first data information.
  • the terminal device determines the at least one piece of to-be-sent first data information based on the feedback type of the at least one piece of candidate first data information that needs to be sent. This helps resolve a collision caused in the sending process of the first data information.
  • the at least one piece of candidate first data information includes the at least one piece of candidate first data information that needs to be received; and when the at least one piece of candidate first data information that needs to be received includes seventh-type candidate first data information and eighth-type candidate first data information, the terminal device determines the at least one piece of to-be-received first data information, where the at least one piece of to-be-received first data information belongs to the eighth-type candidate first data information.
  • the terminal device determines the at least one piece of to-be-received first data information based on the feedback type of the at least one piece of candidate first data information that needs to be received. This helps resolve a collision caused in the receiving process of the first data information.
  • the at least one piece of candidate first data information includes the at least one piece of candidate first data information that needs to be sent and the at least one piece of first data information that needs to be received; and when the at least one piece of candidate first data information that needs to be sent includes seventh-type candidate first data information and eighth-type candidate first data information, and the at least one piece of candidate first data information that needs to be received includes the seventh-type candidate first data information and the eighth-type candidate first data information, the terminal device determines the at least one piece of to-be-sent first data information and/or the at least one piece of to-be-received first data information, where the at least one piece of to-be-sent first data information belongs to the eighth-type candidate first data information, and the at least one piece of to-be-received first data information belongs to the eighth-type candidate first data information.
  • the terminal device determines the at least one piece of to-be-sent first data information and/or the at least one piece of to-be-received first data information based on the feedback type of the at least one piece of candidate first data information. This helps resolve a collision caused in the receiving and/or sending process of the first data information.
  • the method further includes: If the data information corresponding to the at least one piece of to-be-sent first data information is reserved data (that is, a corresponding type is a reservation type), or the data information corresponding to the at least one piece of to-be-received first data information is reserved data, the data information corresponding to the at least one piece of to-be-sent first data information or the data information corresponding to the at least one piece of to-be-received first data information further includes indication information, where the indication information is used to indicate that a reserved link resource continues to be used or is released.
  • the indication information may be represented by SCI, and occupies at least one bit (bit), for example, one bit.
  • the reserved resource when transmission of the reserved data is completed, the reserved resource is released, and the one bit is set to a specific value, namely, 1, indicating that the resource reserved in the SCI is released or invalid.
  • the reserved resource When transmission of the reserved data is not completed, the reserved resource continues to be used and does not need to be released, and the one bit is set to a specific value, namely, 0, indicating that the resource reserved in the SCI continues to be valid and used.
  • the terminal device can learn whether the reserved resource continues to be used or is invalid only by detecting a bit value of the SCI without monitoring the first data information.
  • a feedback information transmission apparatus has a function of implementing behavior in the method example in the first aspect or the second aspect.
  • the function may be implemented by hardware, or may be implemented by hardware by executing corresponding software.
  • the hardware or the software includes one or more modules corresponding to the foregoing function.
  • a structure of the apparatus includes a processing unit and a transceiver unit. These units may perform corresponding steps or functions in the method example in the first aspect or the second aspect. For details, refer to detailed descriptions in the method example. Details are not described herein again.
  • the apparatus may be located in a terminal device, or may be the terminal device.
  • a feedback information transmission apparatus has a function of implementing the foregoing method aspect of the terminal device, and includes corresponding means (means) configured to perform steps or functions described in the first aspect, the second aspect, any one of the possible implementations of the first aspect, or any one of the possible implementations of the second aspect.
  • the steps or functions may be implemented by using software, hardware (for example, a circuit), or a combination of hardware and software.
  • the apparatus may be a terminal device.
  • the apparatus includes one or more processors and communication units.
  • the one or more processors are configured to support the apparatus in performing corresponding functions of the terminal device in the foregoing methods.
  • the apparatus may further include one or more memories.
  • the memory is configured to be coupled to the processor, and the memory stores program instructions and/or data necessary for the apparatus.
  • the one or more memories may be integrated with the processor, or may be disposed independent of the processor. This is not limited in this application.
  • the apparatus includes a transceiver, a processor, and a memory.
  • the processor is configured to control the transceiver or an input/output circuit to receive or send a signal.
  • the memory is configured to store a computer program.
  • the processor is configured to run the computer program in the memory, to enable the apparatus to perform the method completed by the terminal device in the first aspect, the second aspect, any one of the possible implementations of the first aspect, or any one of the possible implementations of the second aspect.
  • the apparatus includes one or more processors and communication units.
  • the one or more processors are configured to support the apparatus in performing corresponding functions of the terminal device in the foregoing methods.
  • the apparatus may further include one or more memories.
  • the memory is configured to be coupled to the processor, and the memory stores program instructions and/or data necessary for the terminal device.
  • the one or more memories may be integrated with the processor, or may be disposed independent of the processor. This is not limited in this application.
  • the apparatus may be located in a terminal device, or may be the terminal device.
  • the apparatus includes a transceiver, a processor, and a memory.
  • the processor is configured to control the transceiver or an input/output circuit to receive or send a signal.
  • the memory is configured to store a computer program.
  • the processor is configured to run the computer program in the memory, to enable the apparatus to perform the method completed by the terminal device in the first aspect, the second aspect, any one of the possible implementations of the first aspect, or any one of the possible implementations of the second aspect.
  • a computer-readable storage medium configured to store a computer program.
  • the computer program includes instructions used to perform the method in the first aspect, the second aspect, any one of the possible implementations of the first aspect, or any one of the possible implementations of the second aspect.
  • a computer program product includes computer program code.
  • the computer program code When the computer program code is run on a computer, the computer is enabled to perform the method in the first aspect, the second aspect, any one of the possible implementations of the first aspect, or any one of the possible implementations of the second aspect.
  • a feedback information transmission apparatus for example, a chip system.
  • the apparatus is connected to a memory, and is configured to read and execute a software program stored in the memory, to perform the method in the first aspect, the second aspect, any one of the possible implementations of the first aspect, or any one of the possible implementations of the second aspect.
  • the technical solutions in the embodiments of this application may be applied to various communication systems, for example, a 4th generation (4th Generation, 4G) system.
  • the 4G system includes an LTE system, a worldwide interoperability for microwave access (worldwide interoperability for microwave access, WiMAX) communication system, a future 5th generation (5th Generation, 5G) system such as NR, and future communication systems such as a 6G system.
  • the technical solutions provided in the embodiments of this application may be applied to a cellular link, or may be applied to a link between devices, for example, a device to device (device to device, D2D) link.
  • the D2D link or a V2X link may also be referred to as a sidelink (sidelink, SL), and the sidelink may also be referred to as a sidelink, a secondary link, or the like.
  • sidelink sidelink
  • SL sidelink
  • the foregoing terms all refer to links established between devices of a same type, and have a same meaning.
  • the link established between devices of a same type may be a link between terminal devices, or may be a link between base stations, or may be a link between relay nodes, or the like. This is not limited in the embodiments of this application.
  • the link between the terminal devices there is a D2D link defined in 3GPP Release (Rel)-12/13, and there is also a V2X link, defined by 3 GPP for Internet of Vehicles, from a vehicle to a vehicle, a vehicle to a mobile phone, or a vehicle to any entity.
  • the V2X link includes a V2X link in Rel-14/15, and further includes, for example, a V2X link based on an NR system in Rel-16 and subsequent releases which are currently being researched by 3GPP.
  • example in the embodiments of this application is used to represent giving an example, an illustration, or a description. Any embodiment or design described as an “example” in this application should not be explained as being more preferred or having more advantages than another embodiment or design. Exactly, the term “example” is used to present a concept in a specific manner.
  • a network architecture and a service scenario (or an application scenario) that are described in the embodiments of this application are intended to describe the technical solutions in the embodiments of this application more clearly, and do not constitute a limitation on the technical solutions provided in the embodiments of this application.
  • a person of ordinary skill in the art may know that, with the evolution of the network architecture and emergence of a new service scenario, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.
  • the terminal device includes a device that provides a user with voice and/or data connectivity, for example, may include a handheld device with a wireless connection function, or a processing device connected to a wireless modem.
  • the terminal device may communicate with a core network through a radio access network (radio access network, RAN) and exchange voice and/or data with the RAN.
  • radio access network radio access network
  • the terminal device may include user equipment (user equipment, UE), a wireless terminal device, a mobile terminal device, a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile station), a mobile console (mobile), a remote station (remote station), an access point (access point, AP), a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), a user apparatus (user device), or the like.
  • user equipment user equipment
  • UE wireless terminal device
  • mobile terminal device a subscriber unit (subscriber unit), a subscriber station (subscriber station), a mobile station (mobile station), a mobile console (mobile), a remote station (remote station), an access point (access point, AP), a remote terminal device (remote terminal), an access terminal device (access terminal), a user terminal device (user terminal), a user agent (user agent), a user apparatus (user device), or the like.
  • the terminal device may include a mobile phone (or referred to as a "cellular" phone), a computer having a mobile terminal device, a portable, pocket-sized, handheld, or computer built-in mobile apparatus, a smart wearable device, or the like.
  • the terminal is a personal communications service (personal communication service, PCS) phone, a cordless telephone set, a session initiation protocol (session initiation protocol, SIP) phone, a wireless local loop (wireless local loop, WLL) station, or a personal digital assistant (personal digital assistant, PDA).
  • the terminal further includes a limited device such as a device with relatively low power consumption, a device with a limited storage capability, or a device with a limited computing capability.
  • the terminal includes an information sensing device such as a barcode, radio frequency identification (radio frequency identification, RFID), a sensor, a global positioning system (global positioning system, GPS), or a laser scanner.
  • the terminal device in the embodiments of this application may alternatively be a wearable device or the like.
  • the wearable device may also be referred to as a wearable intelligent device, and is a general term for wearable devices such as glasses, gloves, watches, clothes, and shoes that are developed by applying wearable technologies in intelligent designs of daily wear.
  • the wearable device is a portable device that can be directly worn on a body or integrated into clothes or an accessory of a user.
  • the wearable device is not only a hardware device, but implements powerful functions through software support, data exchange, and cloud interaction.
  • Generalized wearable intelligent devices include full-featured and large-size devices, such as smart watches or smart glasses, that can implement complete or partial functions without depending on smartphones; and devices, such as various smart bands, smart helmets, or smart jewelry for monitoring physical signs, that focus on only one type of application functions and need to work with other devices such as smartphones.
  • the terminal devices may be considered as vehicle-mounted terminal devices, and the vehicle-mounted terminal devices are also referred to as on-board units (on-board unit, OBU) for example.
  • OBU on-board unit
  • the terminal device may be considered as a roadside terminal device, and the roadside terminal device is also referred to as a roadside unit (Road Side Unit, RSU).
  • the terminal device in this application may alternatively be a vehicle-mounted module, a vehicle-mounted module, a vehicle-mounted component, a vehicle-mounted chip, or a vehicle-mounted unit that is built in a vehicle as one or more components or units.
  • the vehicle uses the vehicle-mounted module, the vehicle-mounted module, the vehicle-mounted component, the vehicle-mounted chip, or the vehicle-mounted unit that is built in the vehicle, to implement the method in this application.
  • the terminal device may further include a network device.
  • the network device includes an access network (access network, AN) device, for example, a base station (for example, an access point), and may be a device that communicates with a wireless terminal device through one or more cells on an air interface in an access network.
  • AN access network
  • a network device in a V2X technology is a road side unit (road side unit, RSU).
  • the base station may be configured to mutually convert a received over-the-air frame and a received Internet protocol (IP) packet, and serve as a router between the terminal device and the other parts of the access network, where the other parts of the access network may include an IP network.
  • IP Internet protocol
  • the RSU may be a fixed infrastructure entity supporting application of the V2X, and may exchange a message with another entity supporting application of the V2X.
  • the network device may further coordinate attribute management of the air interface.
  • the network device may include an evolved NodeB (NodeB or eNB or e-NodeB, evolutional Node B) in a long term evolution (long term evolution, LTE) system or an LTE-advanced (LTE-Advanced, LTE-A) system, may include a next generation NodeB (next generation node B, gNB) in a 5G NR system, or may include a centralized unit (centralized unit, CU) and a distributed unit (distributed unit, DU) in a cloud access network (cloud radio access network, CloudRAN) system.
  • This is not limited in the embodiments of this application.
  • the transmission link includes a sidelink between two terminals, an uplink/a downlink between a terminal side device and a network side device, and the like.
  • Sidelink (sidelink, SL):
  • the sidelink may also be referred to as a sidelink, a secondary link, or the like.
  • the name is not limited in the embodiments of this application.
  • the sidelink is a direct link connection between two V2X terminals, and the V2X terminal is a terminal with a V2X function, for example, the foregoing terminal device.
  • SL transmission Data transmission between two V2X terminals on a sidelink is referred to as the SL transmission.
  • the two V2X terminals may establish a sidelink connection.
  • the V2X terminal used as an initiator sends a request for establishing a sidelink connection to the network device. If the network device agrees with the V2X terminal on establishing the sidelink connection, the network device sends, to the V2X terminal, configuration information for establishing the sidelink connection, and the V2X terminal establishes a sidelink connection to another V2X terminal based on the configuration information sent by the network device.
  • Time domain resource for example, a system frame or a subframe:
  • One slot may include at least one symbol, for example, 14 symbols or 12 symbols. If overlapping time domain resources exist (or a same time domain resource is occupied, or in other words, time domain resources overlap) in a transmission (that is, sending) and/or receiving process of feedback information, a collision is caused in the receiving and/or sending process of the feedback information.
  • one slot may include at least one of a symbol used for downlink transmission, a flexible symbol, a symbol used for uplink transmission, and the like.
  • compositions of the slot are referred to as different slot formats (slot format, SF), and there may be a maximum of 256 slot formats.
  • a slot may have different slot types, and the different slot types include different quantities of symbols. For example, a mini slot (mini slot) includes fewer than seven symbols, and a common slot (slot) includes seven symbols or 14 symbols. Based on different subcarrier spacings, symbol lengths may be different. Therefore, slot lengths may be different.
  • the network device may allocate a plurality of slots to a same terminal for data transmission.
  • the terminal may perform uplink data scheduling in a plurality of allocated slots, for example, scheduling on a physical uplink shared channel (physical uplink shared channel, PUSCH), or may perform downlink data scheduling in a plurality of allocated slots, for example, scheduling on a physical downlink shared channel (physical Downlink Shared CHannel, PDSCH).
  • PUSCH physical uplink shared channel
  • PDSCH physical Downlink shared channel
  • the slot in this embodiment of this application may be any one of the foregoing slots.
  • the feedback information includes feedback information that needs to be received by the terminal device and/or feedback information that needs to be sent by the terminal device.
  • the feedback information that needs to be received by the terminal device is sent by another device to the terminal device, and the feedback information that needs to be sent by the terminal device is sent by the terminal device to the another device.
  • the another device may be another terminal device or a network device.
  • the feedback information includes hybrid automatic repeat request (Hybrid Automatic Repeat reQuest, HARQ) feedback information and the like.
  • a plurality of' means two or more. In view of this, "a plurality of' in this embodiment of this application may also be understood as “at least two”.
  • the term “at least one” may be understood as one or more, for example, understood as one, two, or more.
  • “include at least one” means including one, two, or more, and does not limit which items are included. For example, if "include at least one of A, B, and C", A, B, C, A and B, A and C, B and C, or A and B and C may be included.
  • an understanding of descriptions such as "at least one type" is similar.
  • a and/or B may represent the following three cases: Only A exists, both A and B exist, and only B exists.
  • the character "/" generally indicates an "or" relationship between associated objects.
  • ordinal numerals such as “first” and “second” in the embodiments of this application are used to distinguish between a plurality of objects, and are not intended to limit a sequence, a time sequence, a priority, or an importance degree of the plurality of objects.
  • a first time domain resource and a second time domain resource are merely intended to distinguish between different time domain resources, but are not intended to limit priorities, importance, or the like of the two time domain resources.
  • preset and “predefined” values or information may be preconfigured, or may be configured by using higher layer signaling.
  • the preconfiguration may be writing the values or information in the terminal device in advance, or may be configuring the values or information for the terminal device through operation, administration and maintenance (Operation Administration and Maintenance, OAM).
  • OAM Operaation Administration and Maintenance
  • Performing the configuration by using higher layer signaling is that the network device sends a value or information to be configured to the terminal device by using higher layer signaling.
  • the higher layer signaling may be one or more of radio resource control (Radio Resource Control, RRC) signaling or MAC signaling.
  • RRC Radio Resource Control
  • the Internet of Things is a network extended and expanded based on the Internet provided by a communication system.
  • various apparatuses and technologies such as various information sensors, radio frequency identification technologies, a global positioning system, an infrared sensor, and a laser scanner
  • the Internet of Things collects any object or process that needs to be monitored, connected, and interacted, and implements ubiquitous connections between things, and between things and people through different types of possible network access.
  • the core and foundation of the Internet of Things is still the Internet.
  • the Internet of Things is a network extended and expanded based on the Internet. A user end of the Internet of Things extends and expands to information exchange and communication between any things.
  • the Internet of Things is applied to various fields, such as intelligent transportation.
  • the Internet of Vehicles mainly means that a vehicle-mounted device on a vehicle effectively routes dynamic information of all vehicles on an information network platform by using a wireless communication technology, and provides different function services during operation of the vehicle, to improve vehicle safety, automatic driving, and traffic efficiency.
  • Implementation of the Internet of Vehicles mainly depends on a V2X technology.
  • a core of the V2X technology is to implement interconnection between the vehicles and everything.
  • the V2X technology is mainly applied to a vehicle-to-everything (vehicle to everything, V2X) scenario.
  • the V2X specifically further includes four application scenarios: vehicle-to-vehicle (Vehicle to Vehicle, V2V), vehicle-to-pedestrian (Vehicle-to-Pedestrian, V2P), vehicle-to-infrastructure (Vehicle-to-Infrastructure, V2I) on a roadside, and vehicle-to-network (V2N).
  • V2V refers to inter-vehicle communication.
  • V2P refers to communication between vehicles and people (including pedestrians, cyclists, drivers, and passengers).
  • V2I refers to communication between a vehicle and a roadside unit (RSU).
  • V2N refers to communication between a vehicle and a base station/network.
  • FIG. 1 is a schematic diagram of an application scenario.
  • the application scenario shown in FIG. 1 is a V2X scenario.
  • the scenario includes a vehicle-mounted device (which includes UE 1, UE 2, and UE 3, as shown in FIG. 1 ), a roadside unit (which includes an RSU 1, as shown in FIG. 1 ), a base station device (which includes an eNB, a gNB, and the like, as shown in FIG. 1 ), and a global navigation satellite system (which includes a GNSS, as shown in FIG. 1 ).
  • a vehicle-mounted devices may communicate with each other to exchange and share information, for example, vehicle connection status information such as a vehicle location and a driving speed.
  • the information may be used to determine a road vehicle flow status.
  • the RSU may communicate with each vehicle-mounted device and/or base station device, and may further be configured to detect a road surface condition and guide the vehicle to select an optimal driving route.
  • the base station device communicates with each vehicle-mounted device and/or the RSU, and the GNSS may provide positioning and time serving information for another network element.
  • the vehicle-mounted device in the Internet of Vehicles may further communicate with a person.
  • a user may perform information communication with a vehicle by using a wireless communication means such as Wi-Fi, Bluetooth, or cellular, so that the user can monitor and control the vehicle by using a corresponding mobile terminal device.
  • the base station device in FIG. 1 is optional. If there is a base station device, it is a scenario in which network coverage is provided. If there is no base station device, it is a scenario in which no network coverage is provided.
  • the foregoing devices may communicate with each other by using a sidelink and an uplink/a downlink.
  • a spectrum of a cellular link may be used, or an intelligent transportation spectrum near 5.9 GHz may be used.
  • a technology for mutual communication between devices may be enhanced based on a communication network protocol (for example, an LTE protocol), or may be enhanced based on a D2D technology.
  • the UE 1 may send data (including feedback information) to different UE 2 and UE 3, and receive respective feedback information (for example, ACK/NACK) from the UE 2 and the UE 3.
  • the UE 1 may send the data at a same moment or different moments.
  • the UE 1 may receive the feedback information at a same moment, or in other words, receive the feedback information in a same symbol.
  • the same symbol may be in a same slot, or may be in different slots.
  • the same symbol may be one or more symbols, or may be a part of a symbol. Therefore, the UE 1 needs to receive a plurality of pieces of feedback information simultaneously.
  • the UE 2 and the UE 3 may feed back information to the UE 1 simultaneously.
  • the UE 1 may further send data to a destination UE.
  • the destination UE may be one destination UE, or may be a plurality of destination UEs, for example, a plurality of destination UEs in one groupcast/multicast group. Therefore, the UE 1 may simultaneously receive a plurality of pieces of feedback information.
  • a combination of unicast and groupcast/multicast may alternatively be used. That is, the UE 1 may send data to unicast destination UE (for example, the UE 2) and different destination UEs (for example, the UE 3 and another UE) in a group.
  • the UE 1 may send data at a same moment or different moments, when the UE 1 receives the feedback information from the UE 2 and the UE 3 at a same moment or on a same symbol, the UE also needs to receive a plurality of pieces of feedback information simultaneously.
  • the same symbol may be in a same slot, or may be in different slots.
  • the same symbol may be one or more symbols, or may be a part of a symbol.
  • a transmission resource of the terminal device needs to be determined.
  • There is a periodic service in V2X and a transmission resource available for a sidelink needs to be configured for a period of time during communication.
  • aperiodic services and transmission resources available for the sidelink need to be configured.
  • the conclusion drawn at the RANI #97 meeting includes the following cases. Case 1: UE sends a PSSCH, and receives another PSSCH scheduled by SCI. Respective PSFCHs of the two PSSCHs appear in a same timeslot.
  • Case 2 UE receives SCI sent by different UEs and PSSCHs scheduled by the SCI.
  • PSFCHs corresponding to these PSSCHs appear in a same timeslot.
  • one PSSCH is used for receiving, and the other is used for sending.
  • a collision is caused between sending and/or receiving of feedback information.
  • a collision is caused when feedback information is sent.
  • no appropriate solution is provided to avoid a collision caused in a process of receiving and/or sending (sending and/or receiving) the feedback information. Consequently, the feedback information cannot be normally received or sent, and efficient and accurate transmission of the feedback information cannot be ensured.
  • this application provides a feedback information transmission method, to partially reserve feedback information that causes a collision, to avoid a collision caused in a sending and/or receiving process of the feedback information.
  • the embodiments of this application mainly provide a solution to a collision caused by the feedback information in the data receiving and/or sending process, for other data (for example, any one of received and/or sent data reserved on a transmission link, data that is reserved on a transmission link and that is to be simultaneously sent, received and/or sent data scheduled on a transmission link, and data that is scheduled on a transmission link and that is to be simultaneously sent), if a collision is caused in the data receiving and/or sending process, the collision may also be resolved by using the solutions provided in the embodiments of this application.
  • the transmission link may be a sidelink.
  • the terminal device performs sending or discarding based on the foregoing priorities. That is, the to-be-sent reserved data with a higher priority is sent, and the to-be-sent reserved data with a lower priority is discarded.
  • the terminal device performs sending or discarding based on the foregoing priorities. That is, the to-be-sent reserved data with a higher priority is sent, and the to-be-sent scheduled data with a lower priority is discarded.
  • the terminal device performs sending or discarding based on the foregoing priorities.
  • the to-be-sent reserved data with a higher priority is sent, and the to-be-received reserved data with a lower priority is discarded; or the to-be-received reserved data with a higher priority is received, and the to-be-sent reserved data with a lower priority is discarded.
  • the terminal device sends or discards the data based on the foregoing priorities. That is, the to-be-sent reserved data with a higher priority is sent, and the to-be-received scheduled data with a lower priority is discarded.
  • the terminal device performs receiving or discarding based on the foregoing priorities. That is, the to-be-received reserved data with a higher priority is received, and the to-be-sent data scheduled with a lower priority is discarded.
  • candidate feedback information may also be referred to as feedback information.
  • a quality of service level may also be referred to as quality of service (QoS).
  • the terminal determines at least one piece of to-be-sent feedback information in the at least one piece of candidate feedback information, and then sends the at least one piece of to-be-sent feedback information.
  • the terminal device determines at least one piece of to-be-received feedback information in the at least one piece of candidate feedback information, and then receives the at least one piece of to-be-received feedback information.
  • At least one piece of candidate feedback information includes at least one piece of candidate feedback information that needs to be sent and at least one piece of candidate feedback information that needs to be received, and the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received correspond to a same time domain resource
  • the terminal determines at least one piece of to-be-sent feedback information in the at least one piece of candidate feedback information, and then sends the at least one piece of to-be-sent feedback information; or the terminal determines the at least one piece of to-be-received feedback information in the at least one piece of candidate feedback information, and then receives the at least one piece of to-be-received feedback information.
  • the terminal device determines at least one piece of to-be-sent feedback information and at least one piece of to-be-received feedback information in the at least one piece of candidate feedback information, and then sends the at least one piece of to-be-sent feedback information and receives the at least one piece of to-be-received feedback information.
  • An embodiment of this application provides a feedback information transmission method.
  • the method may be applied to the scenario shown in FIG. 1 , or may be applied to another scenario in which a collision may be caused.
  • FIG. 2 the following describes in detail a specific process of the feedback information transmission method. As shown in FIG. 2 , the process includes the following steps.
  • Step 2.1 A terminal device determines that at least one piece of candidate feedback information that needs to be sent and/or at least one piece of candidate feedback information that needs to be received in at least one piece of candidate feedback information corresponds to a same time domain resource.
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent and/or the at least one piece of candidate feedback information that needs to be received. That is, the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent, the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be received, or the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received.
  • the terminal device determines that a collision is caused in a data sending and/or receiving process.
  • the time domain resource includes a slot, a symbol, another time domain granularity, or the like. If the at least one piece of candidate feedback information that needs to be sent corresponds to a same time domain resource, the terminal device determines that a collision is caused in a data sending and/or receiving process.
  • the time domain resource includes a slot, a symbol, another time domain granularity, or the like.
  • the terminal device determines that a collision is caused in a data receiving process.
  • the time domain resource includes a slot, a symbol, another time domain granularity, or the like.
  • the at least one piece of candidate feedback information that needs to be sent and/or the at least one piece of candidate feedback information that needs to be received corresponds to a same time domain resource
  • the at least one piece of candidate feedback information that needs to be sent and/or the at least one piece of candidate feedback information that needs to be received corresponds to a same first time domain resource.
  • the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received correspond to a same time domain resource includes that the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received correspond to a same time domain resource.
  • That the at least one piece of candidate feedback information that needs to be sent corresponds to a same time domain resource includes: The at least one piece of candidate feedback information that needs to be sent corresponds to a same time domain resource.
  • That the at least one piece of candidate feedback information that needs to be received corresponds to a same time domain resource includes: The at least one piece of candidate feedback information that needs to be received corresponds to a same time domain resource.
  • corresponding to a same time domain resource means overlapping (overlap) on the time domain resource.
  • the overlapping on the time domain resource may also be referred to as that overlapping occurs on the time domain resource or overlapping exists on the time domain resource.
  • the time domain resource may be one or more symbols, one or more slots, one or more mini-slots, or the like. The one or more symbols may be in a same slot, or may be in different slots.
  • That the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received correspond to a same time domain resource includes that the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received overlap on the time domain resource.
  • That the overlapping exists on the time domain resource may be: The at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received overlap on the time domain resource; the at least one piece of candidate feedback information that needs to be sent and that includes radio frequency switching time and the at least one piece of candidate feedback information that needs to be received overlap on the time domain resource; the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received and that includes radio frequency switching time overlap on the time domain resource; or the at least one piece of candidate feedback information that needs to be sent and that includes radio frequency switching time and the at least one piece of candidate feedback information that needs to be received and that includes radio frequency switching time overlap on the time domain resource.
  • That the overlapping exists on the time domain resources may be: First candidate feedback information that needs to be sent and first candidate feedback information that needs to be received overlap on the time domain resource; first candidate feedback information that needs to be sent and that includes radio frequency switching time and first candidate feedback information that needs to be received overlap on the time domain resource; first candidate feedback information that needs to be sent and first candidate feedback information that needs to be received and that includes radio frequency switching time overlap on the time domain resource; or first candidate feedback information that needs to be sent and that includes radio frequency switching time and first candidate feedback information that needs to be received and that includes radio frequency switching time overlap on the time domain resource.
  • That the at least one piece of candidate feedback information that needs to be sent corresponds to a same time domain resource includes that the at least one piece of candidate feedback information that needs to be sent overlaps on the time domain resource.
  • That the overlapping exists on the time domain resource may be: The at least one piece of candidate feedback information that needs to be sent and at least one piece of remaining candidate feedback information that needs to be sent overlap on the time domain resource; at least one piece of candidate feedback information that needs to be sent and that includes radio frequency switching time and at least one piece of remaining candidate feedback information that needs to be sent overlap on the time domain resource; or at least one piece of candidate feedback information that needs to be sent and that needs to include radio frequency switching time and at least one piece of remaining candidate feedback information that needs to be sent and that needs to include radio frequency switching time overlap on the time domain resource.
  • That the overlapping exists on the time domain resource may be: First candidate feedback information that needs to be sent and second candidate feedback information that needs to be sent overlap on the time domain resource; first candidate feedback information that needs to be sent and that includes radio frequency switching time and second candidate feedback information that needs to be sent overlap on the time domain resource; or first candidate feedback information that needs to be sent and that includes radio frequency switching time and second candidate feedback information that needs to be sent and that includes radio frequency switching time overlap on the time domain resource.
  • That the at least one piece of candidate feedback information that needs to be received corresponds to a same time domain resource includes that the at least one piece of candidate feedback information that needs to be received overlaps on the time domain resource.
  • That the overlapping exists on the time domain resource may be: The at least one piece of candidate feedback information that needs to be received and at least one piece of remaining candidate feedback information that needs to be received overlap on the time domain resource; at least one piece of candidate feedback information that needs to be received and that includes radio frequency switching time and at least one piece of remaining candidate feedback information that needs to be received overlap on the time domain resource; or at least one piece of candidate feedback information that needs to be received and that needs to include radio frequency switching time and at least one piece of remaining candidate feedback information that needs to be received and that needs to include radio frequency switching time overlap on the time domain resource.
  • That the overlapping exists on the time domain resource may be: First candidate feedback information that needs to be received and second candidate feedback information that needs to be received overlap on the time domain resource; first candidate feedback information that needs to be received and that includes radio frequency switching time and second candidate feedback information that needs to be received overlap on the time domain resource; or first candidate feedback information that needs to be received and that includes radio frequency switching time and second candidate feedback information that needs to be received and that includes radio frequency switching time overlap on the time domain resource.
  • the terminal device may determine that the at least one piece of candidate feedback information that needs to be sent corresponds to a same time domain resource.
  • the at least one piece of candidate feedback information that needs to be sent includes first candidate feedback information that needs to be sent and second candidate feedback information that needs to be sent:
  • the terminal device may determine that the at least one piece of candidate feedback information that needs to be received corresponds to a same time domain resource.
  • the at least one piece of candidate feedback information that needs to be received includes first candidate feedback information that needs to be received and second candidate feedback information that needs to be received:
  • the terminal device may determine that the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received correspond to a same time domain resource.
  • the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received include first candidate feedback information that needs to be sent and first candidate feedback information that needs to be received:
  • Step 2.2 The terminal device determines at least one piece of to-be-sent feedback information and/or at least one piece of to-be-received feedback information in the at least one piece of candidate feedback information.
  • the terminal device may determine the at least one piece of to-be-sent feedback information or the at least one piece of to-be-received feedback information in the following manners:
  • the terminal device may determine the at least one piece of to-be-sent feedback information and the at least one piece of to-be-received feedback information in the following manners:
  • a quality of service level of data information may include a reference value such as a QoS level.
  • a specific QoS level may include a reference value such as a PPPP/5QI, and may further include reference values such as availability, a throughput, a delay, and a packet loss rate.
  • the type of the data may include unicast (unicast) and groupcast/multicast (groupcast/multicast), unicast and broadcast (broadcast), groupcast/multicast and broadcast, or unicast, groupcast/multicast, and broadcast.
  • the type of the data may further include a reservation type and a scheduling type, or include an option 1 feedback and an option 2 feedback.
  • the feedback type may include an acknowledgement feedback (ACK) and a negative acknowledgement feedback (NACK).
  • the option 1 feedback may also be referred to as a first feedback type
  • the option 2 feedback may also be referred to as a second feedback type.
  • the first feedback type is feeding back only a NACK
  • the second feedback type is feeding back both an ACK and a NACK.
  • there may be a corresponding feedback resource for feeding back the ACK namely, a feedback resource used when the terminal device feeds back the ACK
  • there may be a corresponding feedback resource for feeding back the NACK namely, a feedback resource used when the terminal device feeds back the NACK.
  • Step 2.3 The terminal device sends the at least one piece of to-be-sent feedback information, and/or the terminal device receives the at least one piece of to-be-received feedback information.
  • the terminal device determines the at least one piece of to-be-sent feedback information in the at least one piece of candidate feedback information, the terminal device sends the at least one piece of to-be-sent feedback information. If the terminal device determines the at least one piece of to-be-received feedback information in the at least one piece of candidate feedback information, the terminal device receives the at least one piece of to-be-received feedback information.
  • the terminal device sends the at least one piece of to-be-sent feedback information on a second time-frequency resource, the terminal device receives the at least one piece of to-be-received feedback information on the second time-frequency resource, or the terminal device sends the at least one piece of to-be-sent feedback information on the second time-frequency resource and receives the at least one piece of to-be-received feedback information on the second time-frequency resource.
  • the second time-frequency resource is a time-frequency resource occupied for sending the at least one piece of to-be-sent feedback information
  • the second time-frequency resource is a time-frequency resource occupied for receiving the at least one piece of to-be-received feedback information.
  • the second time-frequency resource occupied for sending the at least one piece of to-be-sent feedback information may be different from the second time-frequency resource occupied for receiving the at least one piece of to-be-received feedback information.
  • the second time-frequency resource is the same as the first time-frequency resource, the second time-frequency resource includes the first time-frequency resource, or the second time-frequency resource partially overlaps the first time-frequency resource. Overlapping in this application may also be referred to as overlapping.
  • the terminal device may determine the at least one piece of to-be-sent feedback information or the at least one piece of to-be-received feedback information, and the terminal device may send the at least one piece of to-be-sent feedback information or receive the at least one piece of to-be-received feedback information.
  • the terminal device may determine the at least one piece of to-be-sent feedback information and/or the at least one piece of to-be-received feedback information, and the terminal device may send the at least one piece of to-be-sent feedback information, receive the at least one piece of to-be-received feedback information, or simultaneously send the at least one piece of to-be-sent feedback information and receive the at least one piece of to-be-received feedback information.
  • the terminal device usually has more receiving capabilities.
  • a quantity of pieces of feedback information received simultaneously is not limited, or a quantity of pieces of feedback information received simultaneously may be very large.
  • the terminal device usually has a limited transmission capability.
  • a quantity of pieces of feedback information transmitted simultaneously is limited, or a quantity of pieces of feedback information transmitted simultaneously falls within a relatively small range (where a preset first value range may be used to represent the relatively small range).
  • the terminal may determine the at least one piece of to-be-sent feedback information, and may send the at least one piece of to-be-sent feedback information.
  • the terminal device determines the at least one piece of to-be-sent feedback information equals to determining one piece of to-be-sent feedback information.
  • the terminal device determines not to send other candidate feedback information.
  • the terminal device gives up sending the other candidate feedback information, or the terminal device discards the other candidate feedback information.
  • the other candidate feedback information is candidate feedback information other than the at least one piece of to-be-sent feedback information in the at least one piece of candidate feedback information that needs to be sent.
  • the terminal device may alternatively determine not to receive the candidate feedback information that needs to be received.
  • the terminal device determines not to receive other candidate feedback information.
  • the terminal device gives up receiving the other candidate feedback information, or the terminal device discards the other candidate feedback information.
  • the other candidate feedback information is candidate feedback information other than the at least one piece of to-be-received feedback information in the at least one piece of candidate feedback information that needs to be received.
  • the terminal device may alternatively determine not to send the candidate feedback information that needs to be sent.
  • the terminal device determines not to send other candidate feedback information and not to receive the other candidate feedback information.
  • the other candidate feedback information not to be sent is candidate feedback information other than the at least one piece of to-be-sent feedback information in the at least one piece of candidate feedback information that needs to be sent.
  • the other candidate feedback information not to be received is candidate feedback information other than the at least one piece of to-be-received feedback information in the at least one piece of candidate feedback information that needs to be received.
  • the terminal device may select the at least one piece of to-be-sent feedback information or the at least one piece of to-be-received feedback information from the at least one piece of candidate feedback information that needs to be sent and/or the at least one piece of candidate feedback information that needs to be received, and then send the at least one piece of to-be-sent feedback information, and/or receive the at least one piece of to-be-received feedback information. Therefore, this method resolves a collision existing in a receiving and/or sending process of the feedback information, and ensures efficient and accurate data transmission.
  • Embodiment 1 The terminal device determines the at least one piece of to-be-sent feedback information or the at least one piece of to-be-received feedback information based on the quality of service level of the data information corresponding to the at least one piece of candidate feedback information.
  • the data information corresponding to the at least one piece of candidate feedback information has a corresponding quality of service level
  • the quality of service level may be obtained from control information associated with the data information. That the data information corresponds to the at least one piece of candidate feedback information is specifically:
  • the data information is sent, there is feedback information corresponding to the data information.
  • That the control information is associated with the data information is specifically:
  • the data information is scheduled by using corresponding control information. Therefore, the terminal device may obtain, from the control information associated with the data information corresponding to the at least one piece of candidate feedback information, the quality of service level of the data information corresponding to the at least one piece of candidate feedback information.
  • the terminal device determines a first reference value of the quality of service level of the data information corresponding to the at least one piece of candidate feedback information that needs to be sent; and/or the terminal device determines a second reference value of the quality of service level of the data information corresponding to the at least one piece of candidate feedback information that needs to be received.
  • the data information may also be referred to as a data packet. In other words, the data packet may be replaced with the data information.
  • the terminal device may determine the first reference value in the following manners:
  • the terminal device may alternatively determine, as the first reference value, a mapping value of quality of service levels of data information corresponding to all feedback information in the at least one piece of candidate feedback information that needs to be sent.
  • the first reference value is a mapping value of quality of service levels of data information corresponding to all feedback information in the at least one piece of candidate feedback information that needs to be sent.
  • the terminal device obtains the quality of service levels of the data information corresponding to all the feedback information in the at least one piece of candidate feedback information that needs to be sent, calculates a first mapping value obtained through mapping the quality of service levels of the data information corresponding to all the feedback information, and determines the first mapping value as the first reference value.
  • a mapping function may be a linear function or a non-linear function that uses, as variables, the quality of service levels of the data information corresponding to all the feedback information in the at least one piece of candidate feedback information that needs to be sent.
  • the terminal device determines, as the first reference value, an average value of quality of service levels of data information corresponding to a first feedback information set in the at least one piece of candidate feedback information that needs to be sent.
  • the first reference value is an average value of quality of service levels of data information corresponding to a first feedback information set in the at least one piece of candidate feedback information that needs to be sent.
  • the terminal device obtains the quality of service levels of the data information corresponding to the first feedback information set in the at least one piece of candidate feedback information that needs to be sent, calculates a second average value of the quality of service levels of the data information corresponding to the first feedback information set, and determines the second average value as the first reference value.
  • the first feedback information set includes the first N pieces of feedback information, in descending order of quality of service levels of corresponding data information, in the at least one piece of candidate feedback information that needs to be sent.
  • N is a positive integer greater than or equal to 1.
  • the first feedback information set includes N pieces of feedback information, with the highest quality of service levels of corresponding data information, in the at least one piece of candidate feedback information that needs to be sent.
  • N is a positive integer greater than or equal to 1.
  • the first feedback information set is a piece of feedback information, with the highest quality of service level of corresponding data information, in the at least one piece of candidate feedback information that needs to be sent. In this case, N is 1.
  • N is greater than or equal to 1, and N is not greater than (that is, less than or equal to) a quantity of the at least one piece of candidate feedback information that needs to be sent.
  • N is a positive integer greater than or equal to 1 and not greater than A.
  • the terminal device determines, as the first reference value, the quality of service level of the data information corresponding to the first feedback information set in the at least one piece of candidate feedback information that needs to be sent.
  • the first reference value is the quality of service level of the data information corresponding to the first feedback information set in the at least one piece of candidate feedback information that needs to be sent.
  • the terminal device may alternatively determine, as the first reference value, a mapping value of the quality of service levels of the data information corresponding to the first feedback information set in the at least one piece of candidate feedback information that needs to be sent.
  • the first reference value is a mapping value of the quality of service levels of the data information corresponding to the first feedback information set in the at least one piece of candidate feedback information that needs to be sent.
  • the terminal device obtains the quality of service levels of the data information corresponding to the first feedback information set in the at least one piece of candidate feedback information that needs to be sent, calculates a second mapping value obtained by mapping, based on a mapping function, the quality of service levels of the data information corresponding to the first feedback information set, and determines the second mapping value as the first reference value.
  • a mapping function may be a linear function or a non-linear function that uses, as variables, the quality of service levels of the data information corresponding to all the feedback information in the at least one piece of candidate feedback information that needs to be sent.
  • the terminal device determines, as the first reference value, any one of quality of service levels of data information corresponding to some or all of the at least one piece of candidate feedback information that needs to be sent.
  • the terminal device may determine the second reference value in the following manners:
  • the terminal device may alternatively determine, as the second reference value, a mapping value of quality of service levels of data information corresponding to all feedback information in the at least one piece of candidate feedback information that needs to be received.
  • the second reference value is a mapping value of quality of service levels of data information corresponding to all feedback information in the at least one piece of candidate feedback information that needs to be received.
  • the terminal device obtains the quality of service levels of the data information corresponding to all the feedback information in the at least one piece of candidate feedback information that needs to be received, calculates a third mapping value obtained through mapping the quality of service levels of the data information corresponding to all the feedback information, and determines the third mapping value as the second reference value.
  • a mapping function may be a linear function or a non-linear function that uses, as variables, the quality of service levels of the data information corresponding to all the feedback information in the at least one piece of candidate feedback information that needs to be received.
  • the terminal device determines, as the second reference value, an average value of quality of service levels of data information corresponding to a second feedback information set in the at least one piece of candidate feedback information that needs to be received.
  • the second reference value is an average value of quality of service levels of data information corresponding to a second feedback information set in the at least one piece of candidate feedback information that needs to be received.
  • the terminal device obtains the quality of service levels of the data information corresponding to the second feedback information in the at least one piece of candidate feedback information that needs to be received, calculates a fourth average value of the quality of service levels of the data information corresponding to the second feedback information set, and determines the fourth average value as the second reference value.
  • the second feedback information set includes the first M pieces of feedback information, in descending order of quality of service levels of corresponding data information, in the at least one piece of candidate feedback information that needs to be received.
  • M is a positive integer greater than or equal to 1.
  • the second feedback information set includes M pieces of feedback information, with the highest quality of service levels of corresponding data information in the at least one piece of candidate feedback information that needs to be received.
  • M is a positive integer greater than or equal to 1.
  • the second feedback information set is a piece of feedback information, with the highest quality of service level of corresponding data information, in the at least one piece of candidate feedback information that needs to be received. In this case, M is 1.
  • M is greater than or equal to 1, and M is not greater than a quantity of the at least one piece of candidate feedback information that needs to be received.
  • M is a positive integer greater than or equal to 1 and not greater than B.
  • M may be equal to N, or may not be equal to N.
  • the terminal device may alternatively determine, as the second reference value, a mapping value of the quality of service levels of the data information corresponding to the second feedback information set in the at least one piece of candidate feedback information that needs to be received.
  • the second reference value is a mapping value of the quality of service levels of the data information corresponding to the second feedback information set in the at least one piece of candidate feedback information that needs to be received.
  • the terminal device obtains the quality of service levels of the data information corresponding to the second feedback information set in the at least one piece of candidate feedback information that needs to be received, calculates a fourth mapping value obtained by mapping, based on a mapping function, the quality of service levels of the data information corresponding to the second feedback information set, and determines the fourth mapping value as the second reference value.
  • a mapping function may be a linear function or a non-linear function that uses, as variables, the quality of service levels of the data information corresponding to all the feedback information in the at least one piece of candidate feedback information that needs to be received.
  • the terminal device determines, as the second reference value, any one of quality of service levels of data information corresponding to some or all of the at least one piece of candidate feedback information that needs to be received.
  • Embodiment 1(1) If the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent: when the first reference value of the quality of service level of the data information corresponding to the at least one piece of candidate feedback information that needs to be sent is greater than or equal to a first priority threshold, the terminal device determines the at least one piece of to-be-sent feedback information, where the at least one piece of to-be-sent feedback information belongs to the at least one piece of candidate feedback information that needs to be sent.
  • the terminal device determines the at least one piece of to-be-sent feedback information in the at least one piece of candidate feedback information that needs to be sent. To be specific, the terminal device determines to send some or all of candidate feedback information that needs to be sent. In other words, the terminal device determines, as to-be-sent feedback information, the some or all of the candidate feedback information that needs to be sent.
  • the terminal device determines, as the to-be-sent feedback information, all of the at least one piece of candidate feedback information that needs to be sent.
  • the terminal device may determine, based on the first reference value of the quality of service level of the data information corresponding to the at least one piece of candidate feedback information that needs to be sent, to send some or all of candidate feedback information that needs to be sent.
  • the terminal device determines that the some or all of the at least one piece of candidate feedback information that needs to be sent is of a high priority, and determines to send the some or all of the candidate feedback information that needs to be sent and that has the high priority.
  • a value of a reference value may represent a priority of feedback information. For example, a greater reference value indicates a higher priority of feedback information, and a smaller reference value indicates a lower priority of feedback information. Specifically, a reference value may be the same as or similar to a priority value of feedback information.
  • Embodiment 1(2) If the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be received: when the second reference value of the quality of service level of the data information corresponding to the at least one piece of candidate feedback information that needs to be received is greater than or equal to a first priority threshold, the terminal device determines the at least one piece of to-be-received feedback information, where the at least one piece of to-be-received feedback information belongs to the at least one piece of candidate feedback information that needs to be received.
  • the terminal device determines the at least one piece of to-be-received feedback information in the at least one piece of candidate feedback information that needs to be received. To be specific, the terminal device determines to receive some or all of candidate feedback information that needs to be received. In other words, the terminal device determines, as to-be-received feedback information, the some or all of the candidate feedback information that needs to be received.
  • the terminal device determines, as the to-be-received feedback information, all of the at least one piece of candidate feedback information that needs to be received.
  • the terminal device may determine, based on a value of the second reference value of the quality of service level of the data information corresponding to the at least one piece of candidate feedback information that needs to be received, to receive some or all of candidate feedback information that needs to be received.
  • the terminal device determines that the some or all of the at least one piece of candidate feedback information that needs to be received is of a high priority, and determines to receive the some or all of the candidate feedback information that needs to be received and that has the high priority.
  • Embodiment 1(3) If the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received: when the first reference value of the quality of service level of the data information corresponding to the at least one piece of candidate feedback information that needs to be sent is greater than or equal to a first priority threshold, the terminal device determines the at least one piece of to-be-sent feedback information, where the at least one piece of to-be-sent feedback information belongs to the at least one piece of candidate feedback information that needs to be sent; and/or when the second reference value of the quality of service level of the data information corresponding to the at least one piece of candidate feedback information that needs to be received is greater than or equal to a first priority threshold, the terminal device determines the at least one piece of to-be-received feedback information, where the at least one piece of to-be-received feedback information belongs to the at least one piece of candidate feedback information that needs to be received.
  • the terminal device selects, as to-be-sent feedback information or to-be-received feedback information, one of the first reference value and the second reference value that has a higher reference value.
  • the terminal device determines the at least one piece of to-be-sent feedback information.
  • the terminal device determines the at least one piece of to-be-received feedback information.
  • it may also be understood as that a greater reference value indicates a higher priority corresponding to the reference value, and a smaller reference value indicates a lower priority corresponding to the reference value.
  • Embodiment 1(1) and Embodiment 1(2) for a process in which the terminal device determines the at least one piece of to-be-sent feedback information and the at least one piece of to-be-received feedback information, refer to Embodiment 1(1) and Embodiment 1(2). Details are not described herein again.
  • Embodiment 1(1) and Embodiment 1(2) for a process in which the terminal device determines the at least one piece of to-be-sent feedback information and the at least one piece of to-be-received feedback information, refer to Embodiment 1(1) and Embodiment 1(2). Details are not described herein again.
  • the terminal device may determine the first priority threshold in the following manners:
  • the third feedback information set includes the first Q pieces of feedback information, in descending order of quality of service levels of corresponding data information, in the at least one piece of candidate feedback information that needs to be sent.
  • Q is a positive integer greater than or equal to 1.
  • Q is greater than or equal to 1, and Q is not greater than the quantity of the at least one piece of candidate feedback information that needs to be sent.
  • Q is a positive integer greater than or equal to 1 and not greater than A.
  • the terminal device determines, as the first priority, the average value of the quality of service levels of the data information corresponding to all the feedback information in the at least one piece of candidate feedback information that needs to be received.
  • the terminal device determines, as the first priority threshold, an average value of quality of service levels of data information corresponding to a fourth feedback information set in the at least one piece of candidate feedback information that needs to be received.
  • the fourth feedback information set includes the first P pieces of feedback information, in descending order of quality of service levels of corresponding data information, in the at least one piece of candidate feedback information that needs to be received.
  • P is a positive integer greater than or equal to 1.
  • P is greater than or equal to 1, and P is not greater than the quantity of the at least one piece of candidate feedback information that needs to be received.
  • the quantity of the at least one piece of candidate feedback information that needs to be received is B, P is a positive integer greater than or equal to 1 and not greater than B.
  • the first priority threshold is configured by a network device by using signaling, where the signaling is RRC signaling, MAC signaling, or physical layer signaling.
  • the first priority threshold is preset for either the network device or the terminal device.
  • the presetting is writing in advance or setting performed through network operation, administration and maintenance (OAM).
  • Embodiment 1 by using specific embodiments:
  • the terminal device does not send the piece of feedback information that needs to be sent, but receives the three pieces of feedback information that need to be received as to-be-received feedback information.
  • the terminal device does not receive the plurality of pieces of feedback information that need to be received, but sends the piece of feedback information that needs to be sent as to-be-sent feedback information.
  • the terminal device does not receive the three pieces of feedback information that need to be received, but sends the piece of feedback information that needs to be sent as to-be-sent feedback information.
  • the terminal device does not send the piece of feedback information that needs to be sent, but receives the some of the plurality of pieces of feedback information that need to be received as to-be-received feedback information.
  • the terminal device does not send the piece of feedback information that needs to be sent, but receives the two pieces of feedback information that need to be received as to-be-received feedback information.
  • the terminal device does not receive the at least one piece of feedback information that needs to be received, but sends the plurality of pieces of feedback information that need to be sent as to-be-sent feedback information.
  • a transmission capability of the terminal device is not exceeded.
  • the terminal device does not receive the four pieces of feedback information that need to be received, but sends the five pieces of feedback information that need to be sent.
  • the transmission capability of the UE is greater than or equal to 5.
  • the terminal device does not receive the four pieces of feedback information that need to be received, but sends the three pieces of feedback information that need to be sent.
  • the transmission capability of the UE is greater than or equal to 3.
  • Embodiment 2 The terminal device determines the at least one piece of to-be-sent feedback information or the at least one piece of to-be-received feedback information based on the first quantity of the at least one piece of candidate feedback information that needs to be sent and/or the second quantity of the at least one piece of candidate feedback information that needs to be received.
  • the terminal device obtains a quantity of pieces of candidate feedback information in the at least one piece of candidate feedback information that needs to be sent, and determines the quantity as the first quantity; the terminal device obtains a quantity of pieces of candidate feedback information in the at least one piece of candidate feedback information that needs to be received, and determines the quantity as the second quantity.
  • the terminal device determines the first quantity of the at least one piece of candidate feedback information that needs to be sent; and/or the terminal device determines the second quantity of the at least one piece of candidate feedback information that needs to be received.
  • Embodiment 2(1) If the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent: when the first quantity of the at least one piece of candidate feedback information that needs to be sent is greater than or equal to a first threshold, the terminal device determines the at least one piece of to-be-sent feedback information, where the at least one piece of to-be-sent feedback information belongs to the at least one piece of candidate feedback information that needs to be sent.
  • the terminal device determines the at least one piece of to-be-sent feedback information in the at least one piece of candidate feedback information that needs to be sent. To be specific, the terminal device determines to send some or all of candidate feedback information that needs to be sent. In other words, the terminal device determines, as to-be-sent feedback information, the some or all of the candidate feedback information that needs to be sent.
  • the terminal device determines, as the to-be-sent feedback information, all of the at least one piece of candidate feedback information that needs to be sent.
  • the terminal device may determine the to-be-sent feedback information in the following manners:
  • Embodiment 2(2) If the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be received: when the second quantity of the at least one piece of candidate feedback information that needs to be received is greater than or equal to a first threshold, the terminal device determines the at least one piece of to-be-received feedback information, where the at least one piece of to-be-received feedback information belongs to the at least one piece of candidate feedback information that needs to be received.
  • the terminal device determines the at least one piece of to-be-received feedback information in the at least one piece of candidate feedback information that needs to be received. To be specific, the terminal device determines to receive some or all of candidate feedback information that needs to be received. In other words, the terminal device determines, as to-be-received feedback information, the some or all of the candidate feedback information that needs to be received.
  • the terminal device determines, as the to-be-received feedback information, all of the at least one piece of candidate feedback information that needs to be received.
  • the terminal device may randomly select a second preset quantity of pieces of to-be-received feedback information from the at least one piece of candidate feedback information that needs to be received, where the second preset quantity of pieces of to-be-received feedback information is the some or all of the candidate feedback information that needs to be received.
  • the terminal device may determine, based on the priority corresponding to the first reference value of the quality of service levels of the data packets corresponding to the at least one piece of candidate feedback information that needs to be received, the some or all of the candidate feedback information that needs to be received.
  • All the first priority threshold, the first threshold, the first ratio threshold, the second ratio threshold, the first threshold, the second threshold, the third threshold, the preset first offset value, the first preset quantity, the second preset quantity, the third preset quantity, the fourth preset quantity, the fifth preset quantity, the sixth preset quantity, the seventh preset quantity, the eighth preset quantity, the ninth preset quantity, the tenth preset quantity, the eleventh preset quantity, the twelfth preset quantity, the thirteenth preset quantity, the fourteenth preset quantity, the fifteenth preset quantity, the sixteenth preset quantity, the seventeenth preset quantity, the eighteenth preset quantity, the nineteenth preset quantity, the twentieth preset quantity, the twenty-first preset quantity, the twenty-second preset quantity, and the like in this application may be preset, or may be configured by the network device by using signaling.
  • the terminal device may determine the to-be-received feedback information in the following manners:
  • Embodiment 2(3) If the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received: when the second quantity of the at least one piece of candidate feedback information that needs to be received is greater than or equal to a first threshold, the terminal device determines the at least one piece of to-be-received feedback information, where the at least one piece of to-be-received feedback information belongs to the at least one piece of candidate feedback information that needs to be received; and/or when the first quantity of the at least one piece of candidate feedback information that needs to be sent is greater than a first threshold, the terminal device determines the at least one piece of to-be-sent feedback information, where the at least one piece of to-be-sent feedback information belongs to the at least one piece of candidate feedback information that needs to be sent.
  • Embodiment 2(1) and Embodiment 2(2) for a process in which the terminal device determines the at least one piece of to-be-sent feedback information and the at least one piece of to-be-received feedback information, refer to Embodiment 2(1) and Embodiment 2(2). Details are not described herein again.
  • Embodiment 2(1) and Embodiment 2(2) for a process in which the terminal device determines the at least one piece of to-be-sent feedback information and the at least one piece of to-be-received feedback information, refer to Embodiment 2(1) and Embodiment 2(2). Details are not described herein again.
  • Embodiment 2(5) If the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received: when a ratio of the first quantity of the at least one piece of candidate feedback information that needs to be received to the second quantity of the at least one piece of candidate feedback information that needs to be received is greater than or equal to a second ratio threshold, the terminal device determines the at least one piece of to-be-sent feedback information, where the at least one piece of to-be-sent feedback information belongs to the at least one piece of candidate feedback information that needs to be sent; or when a ratio of the first quantity of the at least one piece of candidate feedback information that needs to be sent to the second quantity of the at least one piece of candidate feedback information that needs to be received is less than a second ratio threshold, the terminal device determines the at least one piece of to-be-received feedback information, where the at least one piece of to-be-received feedback information belongs to the at least one piece of candidate feedback information that
  • Embodiment 2(1) and Embodiment 2(2) for a process in which the terminal device determines the at least one piece of to-be-sent feedback information and the at least one piece of to-be-received feedback information, refer to Embodiment 2(1) and Embodiment 2(2). Details are not described herein again.
  • the terminal device may determine the first threshold in the following manners:
  • the terminal device may determine the first ratio threshold in the following manners:
  • the terminal device may determine the second ratio threshold in the following manners:
  • the second threshold is greater than the third threshold.
  • the second threshold is 3, and the third threshold is 2.
  • a quality of service level is not considered in Embodiment 2. Even if a priority corresponding to the feedback information that needs to be sent is higher than or equal to a priority corresponding to the feedback information that needs to be received, the terminal device still does not send the feedback information that needs to be sent.
  • a quality of service level is considered in Embodiment 2. If a priority corresponding to the feedback information that needs to be sent is higher than or equal to a priority corresponding to the feedback information that needs to be received, the terminal device may send the feedback information that needs to be sent, or may not send the feedback information that needs to be sent.
  • a terminal device with a half-duplex capability receives and sends a maximum quantity of feedback information on a link.
  • a type of data corresponding to candidate feedback information may be preset in the terminal device.
  • the type of the data corresponding to the candidate feedback information determined by the terminal device includes the following types:
  • a priority of the type of the data corresponding to the first-type candidate feedback information is higher than a priority of the type of the data corresponding to the second-type candidate feedback information.
  • There are a plurality of links for groupcast/multicast and even if one terminal device in a groupcast/multicast group fails to perform feedback, another terminal device in the groupcast/multicast group can successfully perform feedback.
  • there is only one link for unicast communication can be performed only after CSI feedback is performed, and more overheads (used to indicate communication efficiency, where a higher overhead value indicates lower communication efficiency) need to be paid. Therefore, the priority of the unicast is higher than the priority of the groupcast/multicast, so that it can be ensured that a unicast link consuming more overheads is preferentially received and/or sent.
  • a priority of the type of the data corresponding to the first-type candidate feedback information is higher than or higher than a priority of the type of the data corresponding to the second-type candidate feedback information by a first offset value.
  • the first offset value may be a preset first offset value.
  • the first offset value is not limited in this embodiment of this application, and may be, for example, greater than or equal to 0.
  • a priority of unicast may be a priority corresponding to a unicast link, or may be an average priority corresponding to a plurality of unicast links.
  • a priority of groupcast/multicast may be a priority corresponding to a groupcast/multicast link, or may be an average priority corresponding to a plurality of groupcast/multicast links.
  • the priority of the unicast may be set to be higher than a priority of the broadcast
  • the priority of the groupcast/multicast may be set to be higher than or equal to the priority of the broadcast, and so on.
  • Type of data corresponding to third-type candidate feedback information and type of data corresponding to fourth-type candidate feedback information are a reservation type, and the type of the data corresponding to the fourth-type candidate feedback information is a scheduling type.
  • a priority of the type of the data corresponding to the third-type candidate feedback information is higher than a priority of the type of the data corresponding to the fourth-type candidate feedback information.
  • the priority of the reservation type is higher than the priority of the scheduling type, so that it can be ensured that a preview-type link that can bring more resource benefits is preferentially received and/or sent.
  • Type of data corresponding to fifth-type candidate feedback information and type of data corresponding to sixth-type candidate feedback information are feeding back only negative acknowledgement information on a feedback resource, and the type of the data corresponding to the sixth-type candidate feedback information is feeding back acknowledgement information or the negative acknowledgement information on the feedback information corresponding to the terminal device.
  • the fifth candidate feedback information may be referred to as an option 1, and is the same as the first feedback type in the foregoing description.
  • the sixth candidate feedback information may be referred to as an option 2, and is the same as the second feedback type in the foregoing description.
  • a priority of the type of the data corresponding to the fifth-type candidate feedback information is higher than a priority of the type of the data corresponding to the sixth-type candidate feedback information, so that it is ensured that feedback information that feeds back only the negative acknowledgement information is preferentially received and/or sent.
  • the type of the data corresponding to the fifth-type candidate feedback information is feeding back only the negative acknowledgement information on a joint feedback resource, and the joint feedback resource is a feedback resource jointly used by all terminal devices.
  • the acknowledgement information may be ACK information
  • the negative acknowledgement information may be NACK information
  • Embodiment 3(1) If the type of the data corresponding to the candidate feedback information determined by the terminal device includes the type of the data corresponding to the first-type candidate feedback information and the type of the data corresponding to the second-type candidate feedback information, and the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent: when the at least one piece of candidate feedback information that needs to be sent includes the first-type candidate feedback information and the second-type candidate feedback information, the terminal device determines the at least one piece of to-be-sent feedback information, where the at least one piece of to-be-sent feedback information belongs to the first-type candidate feedback information. There is at least one piece of the first-type candidate feedback information.
  • the terminal device determines the at least one piece of to-be-sent feedback information in the first-type candidate feedback information. To be specific, the terminal device determines to send some or all of the first-type candidate feedback information. In other words, the terminal device determines the some or all of the first-type candidate feedback information as to-be-sent feedback information.
  • the terminal device determines all the first-type candidate feedback information as the to-be-sent feedback information.
  • the terminal device may determine the to-be-sent feedback information in the following manners:
  • Embodiment 3(2) If the type of the data corresponding to the candidate feedback information determined by the terminal device includes the type of the data corresponding to the first-type candidate feedback information and the type of the data corresponding to the second-type candidate feedback information, and the at least one piece of candidate feedback information includes at least one piece of candidate feedback information that needs to be received: when the at least one piece of candidate feedback information that needs to be received includes the first-type candidate feedback information and the second-type candidate feedback information, the terminal device determines the at least one piece of to-be-received feedback information, where the at least one piece of to-be-received feedback information belongs to the first-type candidate feedback information. There is at least one piece of the first-type candidate feedback information.
  • the terminal device determines the at least one piece of to-be-received feedback information in the first-type candidate feedback information. To be specific, the terminal device determines to receive some or all of the first-type candidate feedback information. In other words, the terminal device determines the some or all of the first-type candidate feedback information as to-be-received feedback information.
  • the terminal device determines all the first-type candidate feedback information as the to-be-received feedback information.
  • the terminal device may determine the to-be-received feedback information in the following manners:
  • Embodiment 3(3) If the type of the data corresponding to the candidate feedback information determined by the terminal device includes the type of the data corresponding to the first-type candidate feedback information and the type of the data corresponding to the second-type candidate feedback information, and the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received:
  • the terminal device determines the at least one piece of to-be-sent feedback information, where the at least one piece of to-be-sent feedback information belongs to the fifth-type candidate feedback information.
  • the at least one piece of to-be-sent feedback information belongs to the first-type candidate feedback information.
  • the at least one piece of to-be-sent feedback information belongs to the at least one piece of candidate feedback information that needs to be sent.
  • Embodiment 3(1) For a process in which the terminal device determines the at least one piece of to-be-sent feedback information, refer to Embodiment 3(1). Details are not described herein again.
  • the terminal device determines the at least one piece of to-be-received feedback information, where the at least one piece of to-be-received feedback information belongs to the first-type candidate feedback information.
  • the at least one piece of to-be-received feedback information belongs to the first-type candidate feedback information.
  • the at least one piece of to-be-received feedback information belongs to the at least one piece of candidate feedback information that needs to be received.
  • Embodiment 3(2) For a process in which the terminal device determines the at least one piece of to-be-received feedback information, refer to Embodiment 3(2). Details are not described herein again.
  • Embodiment 3(4) If the type of the data corresponding to the candidate feedback information determined by the terminal device includes the type of the data corresponding to the first-type candidate feedback information and the type of the data corresponding to the second-type candidate feedback information, and the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received: when the at least one piece of candidate feedback information that needs to be sent includes the first-type candidate feedback information and the second-type candidate feedback information, and the at least one piece of candidate feedback information that needs to be received includes the first-type candidate feedback information and the second-type candidate feedback information, the terminal device determines the at least one piece of to-be-sent feedback information and/or the at least one piece of to-be-received feedback information, where the at least one piece of to-be-sent feedback information and/or the at least one piece of to-be-received feedback information belongs to the first-type candidate feedback information.
  • Embodiment 3(1) and Embodiment 3(2) for a process in which the terminal device determines the at least one piece of to-be-sent feedback information and the at least one piece of to-be-received feedback information, refer to Embodiment 3(1) and Embodiment 3(2). Details are not described herein again.
  • Embodiment 3(5) If the type of the data corresponding to the candidate feedback information determined by the terminal device includes the type of the data corresponding to the third-type candidate feedback information and the type of the data corresponding to the fourth-type candidate feedback information, and the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent: when the at least one piece of candidate feedback information that needs to be sent includes the third-type candidate feedback information and the fourth-type candidate feedback information, the terminal device determines the at least one piece of to-be-sent feedback information, where the at least one piece of to-be-sent feedback information belongs to the third-type candidate feedback information. There is at least one piece of the third-type candidate feedback information.
  • the terminal device determines the at least one piece of to-be-sent feedback information in the third-type candidate feedback information. To be specific, the terminal device determines to send some or all of the third-type candidate feedback information. In other words, the terminal device determines the some or all of the third-type candidate feedback information as to-be-sent feedback information.
  • the terminal device determines all the third-type candidate feedback information as the to-be-sent feedback information.
  • the terminal device may determine the to-be-sent feedback information in the following manners:
  • Embodiment 3(6) If the type of the data corresponding to the candidate feedback information determined by the terminal device includes the type of the data corresponding to the third-type candidate feedback information and the type of the data corresponding to the fourth-type candidate feedback information, and the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be received: when the at least one piece of candidate feedback information that needs to be received includes the third-type candidate feedback information and the fourth-type candidate feedback information, the terminal device determines the at least one piece of to-be-received feedback information, where the at least one piece of to-be-received feedback information belongs to the third-type candidate feedback information. There is at least one piece of the third-type candidate feedback information.
  • the terminal device determines the at least one piece of to-be-received feedback information in the third-type candidate feedback information. To be specific, the terminal device determines to receive some or all of the third-type candidate feedback information. In other words, the terminal device determines the some or all of the third-type candidate feedback information as to-be-received feedback information.
  • the terminal device determines all the third-type candidate feedback information as the to-be-received feedback information.
  • the terminal device may determine the to-be-received feedback information in the following manners:
  • Embodiment 3(7) If the type of the data corresponding to the candidate feedback information determined by the terminal device includes the type of the data corresponding to the third-type candidate feedback information and the type of the data corresponding to the fourth-type candidate feedback information, and the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received:
  • the terminal device determines the at least one piece of to-be-sent feedback information, where the at least one piece of to-be-sent feedback information belongs to the third-type candidate feedback information.
  • the at least one piece of to-be-sent feedback information belongs to the third-type candidate feedback information.
  • the at least one piece of to-be-sent feedback information belongs to the at least one piece of candidate feedback information that needs to be sent.
  • Embodiment 3(5) For a process in which the terminal device determines the at least one piece of to-be-sent feedback information, refer to Embodiment 3(5). Details are not described herein again.
  • the terminal device determines the at least one piece of to-be-received feedback information, where the at least one piece of to-be-received feedback information belongs to the third-type candidate feedback information.
  • the at least one piece of to-be-received feedback information belongs to the third-type candidate feedback information.
  • the at least one piece of to-be-received feedback information belongs to the at least one piece of candidate feedback information that needs to be received.
  • Embodiment 3(6) For a process in which the terminal device determines the at least one piece of to-be-received feedback information, refer to Embodiment 3(6). Details are not described herein again.
  • Embodiment 3(8) If the type of the data corresponding to the candidate feedback information determined by the terminal device includes the type of the data corresponding to the third-type candidate feedback information and the type of the data corresponding to the fourth-type candidate feedback information, and the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received: when the at least one piece of candidate feedback information that needs to be sent includes the third-type candidate feedback information and the fourth-type candidate feedback information, and the at least one piece of candidate feedback information that needs to be received includes the third-type candidate feedback information and the fourth-type candidate feedback information, the terminal device determines the at least one piece of to-be-sent feedback information and/or the at least one piece of to-be-received feedback information, where the at least one piece of to-be-sent feedback information and/or the at least one piece of to-be-received feedback information belongs to the third-type candidate feedback information.
  • Embodiment 3(5) and Embodiment 3(6) for a process in which the terminal device determines the at least one piece of to-be-sent feedback information and the at least one piece of to-be-received feedback information, refer to Embodiment 3(5) and Embodiment 3(6). Details are not described herein again.
  • Embodiment 4(9) If the type of the data corresponding to the candidate feedback information determined by the terminal device includes the type of the data corresponding to the fifth-type candidate feedback information and the type of the data corresponding to the sixth-type candidate feedback information, and the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent: when the at least one piece of candidate feedback information that needs to be sent includes the fifth-type candidate feedback information and the sixth-type candidate feedback information, the terminal device determines the at least one piece of to-be-sent feedback information, where the at least one piece of to-be-sent feedback information belongs to the fifth-type candidate feedback information. There is at least one piece of the fifth-type candidate feedback information.
  • the terminal device determines the at least one piece of to-be-sent feedback information in the fifth-type candidate feedback information. To be specific, the terminal device determines to send some or all of the fifth-type candidate feedback information. In other words, the terminal device determines the some or all of the fifth-type candidate feedback information as to-be-sent feedback information.
  • the terminal device determines all the fifth-type candidate feedback information as the to-be-sent feedback information.
  • the terminal device may determine the to-be-sent feedback information in the following manners:
  • Embodiment 3(10) If the type of the data corresponding to the candidate feedback information determined by the terminal device includes the type of the data corresponding to the fifth-type candidate feedback information and the type of the data corresponding to the sixth-type candidate feedback information, and the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be received: when the at least one piece of candidate feedback information that needs to be received includes the fifth-type candidate feedback information and the sixth-type candidate feedback information, the terminal device determines the at least one piece of to-be-received feedback information, where the at least one piece of to-be-received feedback information belongs to the fifth-type candidate feedback information. There is at least one piece of the fifth-type candidate feedback information.
  • the terminal device determines the at least one piece of to-be-received feedback information in the fifth-type candidate feedback information. To be specific, the terminal device determines to receive some or all of the fifth-type candidate feedback information. In other words, the terminal device determines the some or all of the fifth-type candidate feedback information as to-be-received feedback information.
  • the terminal device determines all the fifth-type candidate feedback information as the to-be-received feedback information.
  • the terminal device may determine the to-be-received feedback information in the following manners:
  • the at least one piece of to-be-sent feedback information belongs to the fifth-type candidate feedback information.
  • the at least one piece of to-be-sent feedback information belongs to the at least one piece of candidate feedback information that needs to be sent.
  • Embodiment 3(9) For a process in which the terminal device determines the at least one piece of to-be-sent feedback information, refer to Embodiment 3(9). Details are not described herein again.
  • the terminal device determines the at least one piece of to-be-received feedback information, where the at least one piece of to-be-received feedback information belongs to the fifth-type candidate feedback information.
  • the at least one piece of to-be-received feedback information belongs to the fifth-type candidate feedback information.
  • the at least one piece of to-be-received feedback information belongs to the at least one piece of candidate feedback information that needs to be received.
  • Embodiment 3(10) For a process in which the terminal device determines the at least one piece of to-be-received feedback information, refer to Embodiment 3(10). Details are not described herein again.
  • Embodiment 3(9) and Embodiment 3(10) for a process in which the terminal device determines the at least one piece of to-be-sent feedback information and the at least one piece of to-be-received feedback information, refer to Embodiment 3(9) and Embodiment 3(10). Details are not described herein again.
  • Embodiment 4 The terminal device determines the at least one piece of to-be-sent feedback information or the at least one piece of to-be-received feedback information based on the feedback period of the at least one piece of candidate feedback information.
  • a feedback period corresponding to candidate feedback information may be preset in the terminal device.
  • a longer feedback period of the candidate feedback information indicates a higher priority of the candidate feedback information.
  • a shorter feedback period of the candidate feedback information indicates a lower priority of the candidate feedback information. In this case, it can be ensured that feedback information that may obtain a transmission opportunity after a relatively long time is preferentially received and/or sent.
  • FIG. 6 shows cases in which feedback periods N are respectively 1, 2, and 4.
  • Embodiment 4(1) If the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent: when the at least one piece of candidate feedback information that needs to be sent includes first candidate feedback information and second candidate feedback information, and a feedback period of the first candidate feedback information is longer than or equal to a feedback period of the second candidate feedback information, the terminal determines the at least one piece of to-be-sent feedback information, where the at least one piece of to-be-sent feedback information belongs to the first candidate feedback information. There is at least one piece of the first candidate feedback information.
  • the terminal device determines the at least one piece of to-be-sent feedback information in the first candidate feedback information. To be specific, the terminal device determines to send some or all of the first candidate feedback information. In other words, the terminal device determines the some or all of the first candidate feedback information as to-be-sent feedback information.
  • the terminal device determines all the first candidate feedback information as the to-be-sent feedback information.
  • the terminal may determine the to-be-sent feedback information in the following manners:
  • the terminal device determines the at least one piece of to-be-sent feedback information, where the at least one piece of to-be-sent feedback information belongs to the second candidate feedback information. There is at least one piece of the second candidate feedback information.
  • Embodiment 4(2) If the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be received: when the at least one piece of candidate feedback information that needs to be received includes third candidate feedback information and fourth candidate feedback information, and a feedback period of the third candidate feedback information is longer than or equal to a feedback period of the fourth candidate feedback information, the terminal determines the at least one piece of to-be-received feedback information, where the at least one piece of to-be-received feedback information belongs to the third candidate feedback information. There is at least one piece of the third candidate feedback information.
  • the terminal device determines the at least one piece of to-be-received feedback information in the third candidate feedback information. To be specific, the terminal device determines to send some or all of the third candidate feedback information. In other words, the terminal device determines the some or all of the third candidate feedback information as to-be-received feedback information.
  • the terminal device determines all the third candidate feedback information as the to-be-received feedback information.
  • the terminal may determine the to-be-received feedback information in the following manners:
  • the terminal device determines the at least one piece of to-be-received feedback information, where the at least one piece of to-be-received feedback information belongs to the fourth candidate feedback information. There is at least one piece of the fourth candidate feedback information.
  • Embodiment 4(3) If the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received: In a possible implementation, when a first feedback period of the at least one piece of candidate feedback information that needs to be sent is longer than or equal to a second feedback period of the at least one piece of candidate feedback information that needs to be received, the terminal device determines the at least one piece of to-be-sent feedback information, where the at least one piece of to-be-sent feedback information belongs to the at least one piece of candidate feedback information that needs to be sent.
  • Embodiment 4(1) For a process in which the terminal determines the at least one piece of to-be-sent feedback information, refer to Embodiment 4(1). Details are not described herein again.
  • the terminal device determines the at least one piece of to-be-received feedback information, where the at least one piece of to-be-received feedback information belongs to the at least one piece of candidate feedback information that needs to be received.
  • Embodiment 4(2) For a process in which the terminal determines the at least one piece of to-be-received feedback information, refer to Embodiment 4(2). Details are not described herein again.
  • Embodiment 4(1) and Embodiment 4(2) for a process in which the terminal device determines the at least one piece of to-be-sent feedback information and the at least one piece of to-be-received feedback information, refer to Embodiment 4(1) and Embodiment 4(2). Details are not described herein again.
  • Embodiment 5 The terminal device determines the at least one piece of to-be-sent feedback information and/or the at least one piece of to-be-received feedback information based on the feedback type of the at least one piece of candidate feedback information.
  • a feedback type of candidate feedback information may be preset in the terminal device.
  • the feedback type of the candidate feedback information includes seventh-type candidate feedback information and eighth-type candidate feedback information, where a feedback type of the seventh-type candidate feedback information is an acknowledgement feedback, and a feedback type of the eighth-type candidate feedback information is a negative acknowledgement feedback.
  • the acknowledgement feedback may be feeding back ACK information
  • the negative acknowledgement feedback may be feeding back NACK information
  • a priority of the feedback type of the eighth-type candidate feedback information is higher than a priority of the feedback type of the seventh-type candidate feedback information.
  • Embodiment 5 may be mainly applied to a groupcast/multicast scenario in which feedback information for a plurality of groups (group) is sent.
  • Embodiment 5(1) If the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent: when the at least one piece of candidate feedback information that needs to be sent includes the seventh-type candidate feedback information and the eighth-type candidate feedback information, the terminal device determines the at least one piece of to-be-sent feedback information, where the at least one piece of to-be-sent feedback information belongs to the eighth-type candidate feedback type. There is at least one piece of the eighth-type candidate feedback information.
  • the terminal device determines the at least one piece of to-be-sent feedback information in the eighth-type candidate feedback information. To be specific, the terminal device determines to send some or all of the eighth-type candidate feedback information. In other words, the terminal device determines the some or all of the eighth-type candidate feedback information as to-be-sent feedback information.
  • the terminal device determines all the eighth-type candidate feedback information as the to-be-sent feedback information.
  • the terminal device may determine the to-be-sent feedback information in the following manners:
  • Embodiment 5(2) If the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be received: when the at least one piece of candidate feedback information that needs to be received includes the seventh-type candidate feedback information and the eighth-type candidate feedback information, the terminal device determines the at least one piece of to-be-received feedback information, where the at least one piece of to-be-received feedback information belongs to the eighth-type candidate feedback information. There is at least one piece of the eighth-type candidate feedback information.
  • the terminal device determines the at least one piece of to-be-received feedback information in the eighth-type candidate feedback information. To be specific, the terminal device determines to receive some or all of the eighth-type candidate feedback information. In other words, the terminal device determines the some or all of the eighth-type candidate feedback information as to-be-received feedback information.
  • the terminal device determines all the eighth-type candidate feedback information as the to-be-received feedback information.
  • the terminal device may determine the to-be-received feedback information in the following manners:
  • Embodiment 5(3) If the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received: when the at least one piece of candidate feedback information that needs to be sent includes the seventh-type candidate feedback information and the eighth-type candidate feedback information, and the at least one piece of candidate feedback information that needs to be received includes the seventh-type candidate feedback information and the eighth-type candidate feedback information, the terminal device determines the at least one piece of to-be-sent feedback information and/or the at least one piece of to-be-received feedback information, where the at least one piece of to-be-sent feedback information belongs to the eighth-type candidate feedback type, and the at least one piece of to-be-received feedback information belongs to the eighth-type candidate feedback information.
  • Embodiment 5(1) and Embodiment 5(2) for a process in which the terminal device determines the at least one piece of to-be-sent feedback information and the at least one piece of to-be-received feedback information, refer to Embodiment 5(1) and Embodiment 5(2). Details are not described herein again.
  • the terminal device may monitor feedback information to determine whether a link resource continues to be used or is released. For example, when detecting an ACK feedback, the terminal device determines that the link resource is released. When detecting a NACK feedback, the terminal device determines that the link resource is not released and continues to be used.
  • a data packet corresponding to the at least one piece of to-be-sent feedback information is reserved data (that is, a corresponding type is a reservation type), or a data packet corresponding to the at least one piece of to-be-received feedback information is reserved data
  • the data packet corresponding to the at least one piece of to-be-sent feedback information or the data packet corresponding to the at least one piece of to-be-received feedback information further includes indication information, where the indication information is used to indicate that a reserved link resource continues to be used or is released.
  • the indication information is represented by SCI, and occupies at least one bit (bit), for example, one bit.
  • the reserved resource when transmission of the reserved data is completed, the reserved resource is released, and the one bit is set to a specific value, namely, 1, indicating that the resource reserved in the SCI is released or invalid.
  • the reserved resource When transmission of the reserved data is not completed, the reserved resource continues to be used and does not need to be released, and the one bit is set to a specific value, namely, 0, indicating that the resource reserved in the SCI continues to be valid and used.
  • the terminal device can learn whether the reserved resource continues to be used or is released only by detecting a bit value of the SCI without monitoring the feedback information.
  • the embodiments of this application further provide a feedback information transmission apparatus.
  • the feedback information transmission apparatus 700 includes a processing unit 701 and a transceiver unit 702.
  • the apparatus 700 may be configured to implement the method described in the foregoing method embodiments applied to a terminal device.
  • the apparatus 700 may be located in a terminal device, or may be the terminal device.
  • the apparatus in the foregoing embodiments may be the terminal device, or may be a chip applied to the terminal device, or another combined device, component, or the like that has a function of the foregoing terminal device.
  • the transceiver unit may be a transceiver, which may include an antenna, a radio frequency circuit, and the like.
  • the processing module may be a processor, for example, a central processing unit (central processing unit, CPU).
  • the transceiver unit may be a radio frequency unit, and the processing module may be a processor.
  • the transceiver unit may be an input/output interface of the chip system, and the processing module may be a processor of the chip system.
  • the processing unit 701 is configured to determine at least one piece of to-be-sent feedback information or at least one piece of to-be-received feedback information in at least one piece of candidate feedback information, where the at least one piece of candidate feedback information includes at least one piece of candidate feedback information that needs to be sent and/or at least one piece of candidate feedback information that needs to be received, and the at least one piece of candidate feedback information that needs to be sent and/or the at least one piece of candidate feedback information that needs to be received corresponds to a same time domain resource.
  • the transceiver unit 702 is configured to send the at least one piece of to-be-sent feedback information or receive the at least one piece of to-be-received feedback information.
  • the at least one piece of candidate feedback information that needs to be sent and/or the at least one piece of feedback information that needs to be received corresponds to a same first time domain resource.
  • the transceiver unit 702 is specifically configured to send the at least one piece of to-be-sent feedback information or receive the at least one piece of to-be-received feedback information in the following manner: sending the at least one piece of to-be-sent feedback information on a second time-frequency resource, or receiving the at least one piece of to-be-received feedback information on the second time-frequency resource, where the second time-frequency resource is the same as the first time-frequency resource, the second time-frequency resource includes the first time-frequency resource, or the second time-frequency resource partially overlaps the first time-frequency resource.
  • the processing unit 701 is specifically configured to determine the at least one piece of to-be-sent feedback information or the at least one piece of to-be-received feedback information in the at least one piece of candidate feedback information in the following manners:
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received; and the processing unit 701 is specifically configured to determine, in the following manners, the at least one piece of to-be-sent feedback information or the at least one piece of to-be-received feedback information based on the quality of service level of the data information corresponding to the at least one piece of candidate feedback information:
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received; and the processing unit 701 is specifically configured to determine, in the following manners, the at least one piece of to-be-sent feedback information or the at least one piece of to-be-received feedback information based on the quality of service level of the data information corresponding to the at least one piece of candidate feedback information:
  • the first reference value is an average value of quality of service levels of data information corresponding to all feedback information in the at least one piece of candidate feedback information that needs to be sent, or the first reference value is an average value of quality of service levels of data information corresponding to a first feedback information set in the at least one piece of candidate feedback information that needs to be sent, where the first feedback information set includes the first N pieces of feedback information, in descending order of quality of service levels of corresponding data information, in the at least one piece of candidate feedback information that needs to be sent, and N is a positive integer greater than or equal to 1; and the second reference value is an average value of quality of service levels of data information corresponding to all feedback information in the at least one piece of candidate feedback information that needs to be received, or the second reference value is an average value of quality of service levels of data information corresponding to a second feedback information set in the at least one piece of candidate feedback information that needs to be received, where the second feedback information set includes the first M pieces of feedback information, in descending order of quality of service levels of corresponding data information,
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received; and the processing unit 701 is specifically configured to determine, in the following manners, the at least one piece of to-be-sent feedback information or the at least one piece of to-be-received feedback information based on the first quantity of the at least one piece of candidate feedback information that needs to be sent and/or the second quantity of the at least one piece of candidate feedback information that needs to be received:
  • the processing unit 701 is specifically configured to determine, in the following manners, the at least one piece of to-be-sent feedback information or the at least one piece of to-be-received feedback information based on the type of the data corresponding to the at least one piece of candidate feedback information:
  • the processing unit 701 is specifically configured to determine, in the following manners, the at least one piece of to-be-sent feedback information or the at least one piece of to-be-received feedback information based on the type of the data corresponding to the at least one piece of candidate feedback information:
  • the processing unit 701 is specifically configured to determine, in the following manners, the at least one piece of to-be-sent feedback information or the at least one piece of to-be-received feedback information based on the type of the data corresponding to the at least one piece of candidate feedback information:
  • the processing unit 701 is specifically configured to determine, in the following manners, the at least one piece of to-be-sent feedback information or the at least one piece of to-be-received feedback information based on the feedback period of the at least one piece of candidate feedback information:
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent; and the processing unit 701 is specifically configured to determine, in the following manner, the at least one piece of to-be-sent feedback information or the at least one piece of to-be-received feedback information based on the feedback type of the at least one piece of candidate feedback information: when the at least one piece of candidate feedback information that needs to be sent includes seventh-type candidate feedback information and eighth-type candidate feedback information, a feedback type of the seventh-type candidate feedback information is an acknowledgement feedback, and a feedback type of the eighth-type candidate feedback information is a negative acknowledgement feedback, determining the at least one piece of to-be-sent feedback information, where the at least one piece of to-be-sent feedback information belongs to the eighth-type candidate feedback information.
  • division into the modules is an example and is merely logical function division, and may be other division during actual implementation.
  • function units in the embodiments of this application may be integrated into one processing unit, or may exist alone physically, or two or more units may be integrated into one unit.
  • the integrated unit may be implemented in a form of hardware, or may be implemented in a form of a software function unit.
  • the integrated unit When the integrated unit is implemented in a form of a software function unit and sold or used as an independent product, the integrated unit may be stored in a computer-readable storage medium. Based on such an understanding, the technical solutions of this application essentially, or the part contributing to the current technology, or all or some of the technical solutions may be implemented in the form of a software product.
  • the computer software product is stored in a storage medium and includes several instructions for instructing a computer device (which may be a personal computer, a server, or a network device) or a processor (processor) to perform all or some of the steps of the method described in the embodiments of this application.
  • the foregoing storage medium includes: any medium that can store program code, such as a USB flash drive, a removable hard disk, a read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk, or an optical disc.
  • program code such as a USB flash drive, a removable hard disk, a read-only memory (Read-Only Memory, ROM), a random access memory (Random Access Memory, RAM), a magnetic disk, or an optical disc.
  • the embodiments of this application further provide a schematic structural diagram of a feedback information transmission apparatus 800.
  • the apparatus 800 may be configured to implement the method described in the foregoing method embodiments applied to a terminal device. For details, refer to the descriptions in the foregoing method embodiments.
  • the apparatus 800 may be located in a terminal device, or may be the terminal device.
  • the apparatus 800 includes one or more processors 801.
  • the processor 801 may be a general-purpose processor, a dedicated processor, or the like.
  • the processor may be a baseband processor or a central processing unit.
  • the baseband processor may be configured to process a communication protocol and communication data.
  • the central processing unit may be configured to control the communication apparatus (for example, a base station, a terminal, or a chip), execute a software program, and process data of the software program.
  • the communication apparatus may include a transceiver unit that is configured to input (receive) and output (send) a signal.
  • the transceiver unit may be a transceiver, a radio frequency chip, or the like.
  • the apparatus 800 includes one or more processors 801, and the one or more processors 801 may implement the method of the terminal device in the foregoing embodiments.
  • the processor 801 may further implement another function.
  • the processor 801 may execute instructions, to enable the apparatus 800 to perform the method described in the foregoing method embodiments. All or some of the instructions, for example, instruction 803, may be stored in the processor. Alternatively, all or some of the instructions, for example, instruction 804, may be stored in the memory 802 coupled to the processor. Alternatively, the instructions 803 and 804 may be used together to enable the apparatus 800 to perform the method described in the foregoing method embodiments.
  • the communication apparatus 800 may alternatively include a circuit, and the circuit may implement a function of the terminal device in the foregoing method embodiments.
  • the apparatus 800 may include one or more memories 802, storing the instruction 804, and the instructions may be run on the processor, to enable the apparatus 800 to perform the method described in the foregoing method embodiments.
  • the memory may further store data.
  • the processor may alternatively store instructions and/or data.
  • the one or more memories 802 may store the correspondence described in the foregoing embodiments, or the related parameters or tables in the foregoing embodiments.
  • the processor and the memory may be separately disposed, or may be integrated together.
  • the apparatus 800 may further include a transceiver unit 805.
  • the processor 801 may be referred to as a processing unit, to control an apparatus (a terminal or a base station).
  • the transceiver unit 805 may be referred to as a transceiver machine, a transceiver circuit, a transceiver, or the like, and is configured to implement receiving and/or sending for the apparatus.
  • the apparatus 800 may include the transceiver unit 805.
  • the apparatus 800 may further include a transceiver unit 805 and an antenna 806.
  • the processor 801 may be referred to as a processing unit, to control an apparatus (a terminal or a base station).
  • the transceiver unit 805 may be referred to as a transceiver machine, a transceiver circuit, a transceiver, or the like, and is configured to implement a transceiver function of the apparatus by using the antenna 806.
  • the apparatus 800 may include the transceiver unit 805 and an antenna 806.
  • the processor 801 is configured to execute the instruction 803, and/or the instruction 804 in the memory 802, to enable the apparatus 800 to determine at least one piece of to-be-sent feedback information or at least one piece of to-be-received feedback information in at least one piece of candidate feedback information, where the at least one piece of candidate feedback information includes at least one piece of candidate feedback information that needs to be sent and/or at least one piece of candidate feedback information that needs to be received, and the at least one piece of candidate feedback information that needs to be sent and/or the at least one piece of candidate feedback information that needs to be received corresponds to a same time domain resource.
  • the transceiver unit 805 is configured to send the at least one piece of to-be-sent feedback information or receive the at least one piece of to-be-received feedback information.
  • the transceiver unit 805 is further configured to send the at least one piece of to-be-sent feedback information by using the antenna 806, or receive the at least one piece of to-be-received feedback information by using the antenna 806.
  • the at least one piece of candidate feedback information that needs to be sent and/or the at least one piece of feedback information that needs to be received corresponds to a same first time domain resource.
  • the transceiver unit 805 is specifically configured to send the at least one piece of to-be-sent feedback information on a second time-frequency resource, or receive the at least one piece of to-be-received feedback information on the second time-frequency resource, where the second time-frequency resource is the same as the first time-frequency resource, the second time-frequency resource includes the first time-frequency resource, or the second time-frequency resource partially overlaps the first time-frequency resource.
  • the transceiver unit 805 is specifically configured to send the at least one piece of to-be-sent feedback information on a second time-frequency resource by using the antenna 806, or receive the at least one piece of to-be-received feedback information on the second time-frequency resource by using the antenna 806, where the second time-frequency resource is the same as the first time-frequency resource, the second time-frequency resource includes the first time-frequency resource, or the second time-frequency resource partially overlaps the first time-frequency resource.
  • the processor is specifically configured to execute the instruction 803, and/or the instruction 804 in the memory 802, to enable the apparatus 800 to determine the at least one piece of to-be-sent feedback information or the at least one piece of to-be-received feedback information in the at least one piece of candidate feedback information in the following manners:
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received; and the processor 801 is specifically configured to execute the instruction 803, and/or the instruction 804 in the memory 802, to enable the apparatus 800 to determine, in the following manners, the at least one piece of to-be-sent feedback information or the at least one piece of to-be-received feedback information based on the quality of service level of the data information corresponding to the at least one piece of candidate feedback information:
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received; and the processor 801 is specifically configured to execute the instruction 803, and/or the instruction 804 in the memory 802, to enable the apparatus 800 to determine, in the following manners, the at least one piece of to-be-sent feedback information or the at least one piece of to-be-received feedback information based on the quality of service level of the data information corresponding to the at least one piece of candidate feedback information:
  • the first reference value is an average value of quality of service levels of data information corresponding to all feedback information in the at least one piece of candidate feedback information that needs to be sent, or the first reference value is an average value of quality of service levels of data information corresponding to a first feedback information set in the at least one piece of candidate feedback information that needs to be sent, where the first feedback information set includes the first N pieces of feedback information, in descending order of quality of service levels of corresponding data information, in the at least one piece of candidate feedback information that needs to be sent, and N is a positive integer greater than or equal to 1; and the second reference value is an average value of quality of service levels of data information corresponding to all feedback information in the at least one piece of candidate feedback information that needs to be received, or the second reference value is an average value of quality of service levels of data information corresponding to a second feedback information set in the at least one piece of candidate feedback information that needs to be received, where the second feedback information set includes the first M pieces of feedback information, in descending order of quality of service levels of corresponding data information,
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent and the at least one piece of candidate feedback information that needs to be received; and the processor 801 is specifically configured to execute the instruction 803, and/or the instruction 804 in the memory 802, to enable the apparatus 800 to determine, in the following manners, the at least one piece of to-be-sent feedback information or the at least one piece of to-be-received feedback information based on the first quantity of the at least one piece of candidate feedback information that needs to be sent and/or the second quantity of the at least one piece of candidate feedback information that needs to be received:
  • the processor 801 is specifically configured to execute the instruction 803, and/or the instruction 804 in the memory 802, to enable the apparatus 800 to determine, in the following manners, the at least one piece of to-be-sent feedback information or the at least one piece of to-be-received feedback information based on the type of the data corresponding to the at least one piece of candidate feedback information:
  • the processor 801 is specifically configured to execute the instruction 803, and/or the instruction 804 in the memory 802, to enable the apparatus 800 to determine, in the following manners, the at least one piece of to-be-sent feedback information or the at least one piece of to-be-received feedback information based on the type of the data corresponding to the at least one piece of candidate feedback information:
  • the processor 801 is specifically configured to execute the instruction 803, and/or the instruction 804 in the memory 802, to enable the apparatus 800 to determine, in the following manners, the at least one piece of to-be-sent feedback information or the at least one piece of to-be-received feedback information based on the type of the data corresponding to the at least one piece of candidate feedback information:
  • the processor 801 is specifically configured to execute the instruction 803, and/or the instruction 804 in the memory 802, to enable the apparatus 800 to determine, in the following manners, the at least one piece of to-be-sent feedback information or the at least one piece of to-be-received feedback information based on the feedback period of the at least one piece of candidate feedback information:
  • the at least one piece of candidate feedback information includes the at least one piece of candidate feedback information that needs to be sent.
  • the processor 801 is specifically configured to execute the instruction 803, and/or the instruction 804 in the memory 802, to enable the apparatus 800 to determine, in the following manner, the at least one piece of to-be-sent feedback information or the at least one piece of to-be-received feedback information based on the feedback type of the at least one piece of candidate feedback information: when the at least one piece of candidate feedback information that needs to be sent includes seventh-type candidate feedback information and eighth-type candidate feedback information, a feedback type of the seventh-type candidate feedback information is an acknowledgement feedback, and a feedback type of the eighth-type candidate feedback information is a negative acknowledgement feedback, determining the at least one piece of to-be-sent feedback information, where the at least one piece of to-be-sent feedback information belongs to the eighth-type candidate feedback information.
  • the processor in the embodiments of this application may be an integrated circuit chip, and has a signal processing capability.
  • the steps in the foregoing method embodiments may be implemented by using a hardware integrated logic circuit in the processor, or by using instructions in a form of software.
  • the processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or another programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component.
  • DSP Digital Signal Processor
  • ASIC Application Specific Integrated Circuit
  • FPGA Field Programmable Gate Array
  • the method, steps, and logical block diagrams that are disclosed in the embodiments of this application may be implemented or performed.
  • the general-purpose processor may be a microprocessor, or the processor may be any conventional processor or the like.
  • the steps of the method disclosed with reference to the embodiments of this application may be directly performed and completed by using a hardware decoding processor, or may be performed and completed by using a combination of hardware and software modules in a decoding processor.
  • the software module may be located in a mature storage medium in the art, such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an electrically erasable programmable memory, or a register.
  • the storage medium is located in the memory, and the processor reads information in the memory and completes the steps in the foregoing method in combination with hardware of the processor.
  • the memory in the embodiments of this application may be a volatile memory or a nonvolatile memory, or may include a volatile memory and a nonvolatile memory.
  • the nonvolatile memory may be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electrically erasable programmable read-only memory (Electrically EPROM, EEPROM), or a flash memory.
  • the volatile memory may be a random access memory (Random Access Memory, RAM), used as an external cache.
  • RAMs may be used, for example, a static random access memory (Static RAM, SRAM), a dynamic random access memory (Dynamic RAM, DRAM), a synchronous dynamic random access memory (Synchronous DRAM, SDRAM), a double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), an enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), a synchlink dynamic random access memory (Synchlink DRAM, SLDRAM), and a direct rambus random access memory (Direct Rambus RAM, DR RAM).
  • static random access memory Static RAM, SRAM
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Enhanced SDRAM, ESDRAM enhanced synchronous dynamic random access memory
  • Synchlink DRAM, SLDRAM synchlink dynamic random access memory
  • Direct Rambus RAM Direct Rambus RAM
  • An embodiment of this application further provides a computer-readable medium.
  • the computer-readable medium stores a computer program.
  • the computer program is executed by a computer, the feedback information transmission method described in any one of the foregoing method embodiments applied to a terminal device is implemented.
  • An embodiment of this application further provides a computer program product.
  • the computer program product is executed by a computer, the feedback information transmission method described in any one of the foregoing method embodiments applied to a terminal device is implemented.
  • All or some of the foregoing embodiments may be implemented by software, hardware, firmware, or any combination thereof.
  • the software is used to implement the embodiments, all or some of the embodiments may be implemented in a form of a computer program product.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or another programmable apparatus.
  • the computer instructions may be stored in a computer-readable storage medium or may be transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the one or more computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center in a wired (for example, a coaxial cable, an optical fiber, or a digital subscriber line (Digital Subscriber Line, DSL)) or wireless (for example, infrared, radio, and microwave) manner.
  • the computer-readable storage medium may be any usable medium accessible by a computer, or a data storage device, such as a server or a data center, integrating one or more usable media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, or a magnetic tape), an optical medium (for example, a high-density digital video disc (Digital Video Disc, DVD)), a semiconductor medium (for example, a solid-state drive (Solid State Disk, SSD)), or the like.
  • a magnetic medium for example, a floppy disk, a hard disk, or a magnetic tape
  • an optical medium for example, a high-density digital video disc (Digital Video Disc, DVD)
  • a semiconductor medium for example, a solid-state drive (Solid State Disk, SSD)
  • An embodiment of this application further provides a processing apparatus, including a processor and an interface.
  • the processor is configured to perform the feedback information transmission method described in any one of the foregoing method embodiments applied to a terminal device.
  • the processing apparatus may be a chip.
  • the processor may be implemented by hardware, or may be implemented by software.
  • the processor may be a logic circuit, an integrated circuit, or the like.
  • the processor may be a general-purpose processor.
  • the general-purpose processor is implemented by reading software code stored in a memory.
  • the memory may be integrated into the processor, or may be located outside the processor and exist independently.
  • the disclosed system, apparatus, and method may be implemented in other manners.
  • the described apparatus embodiment is merely an example.
  • division into the units is merely logical function division and may be other division in an actual implementation.
  • a plurality of units or components may be combined or integrated into another system, or some features may be ignored or not performed.
  • the displayed or discussed mutual couplings or direct couplings or communication connections may be implemented by using some interfaces, and indirect couplings or communication connections between the apparatuses or units may be electrical connections, mechanical connections, or connections in other forms.
  • the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on a plurality of network units. Some or all of the units may be selected based on actual needs to achieve the objectives of the solutions in the embodiments of this application.
  • function units in the embodiments of this application may be integrated into one processing unit, or each of the units may exist alone physically, or two or more units are integrated into one unit.
  • the integrated unit may be implemented in a form of hardware, or may be implemented in a form of a software function unit.
  • the computer-readable medium includes a computer storage medium and a communication medium, where the communication medium includes any medium that facilitates transmission of a computer program from one place to another.
  • the storage medium may be any available medium accessible by a computer.
  • the computer-readable medium may include a RAM, a ROM, an EEPROM, a CD-ROM or another compact disc storage, a magnetic disk storage medium or another magnetic storage device, or any other medium that can carry or store expected program code in a form of instructions or a data structure and is accessible by a computer.
  • any connection may be appropriately defined as a computer-readable medium.
  • a disk (Disk) and a disc (disc) used in this application include a compact disc (CD), a laser disc, an optical disc, a digital versatile disc (DVD), a floppy disk, and a Blu-ray disc.
  • the disk usually copies data in a magnetic manner, but the disc copies data optically through a laser.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Quality & Reliability (AREA)
  • Mobile Radio Communication Systems (AREA)
EP20847693.7A 2019-08-01 2020-07-31 Verfahren und vorrichtung zur übertragung von feedback-informationen Pending EP4009561A4 (de)

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PCT/CN2020/106319 WO2021018295A1 (zh) 2019-08-01 2020-07-31 一种反馈信息传输方法及装置

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CN112311515A (zh) 2021-02-02
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EP4009561A4 (de) 2022-10-12
US20220190971A1 (en) 2022-06-16
WO2021018295A1 (zh) 2021-02-04
JP7338038B2 (ja) 2023-09-04

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